OK. Now, after I've got my real unit... I can give my honest assessment. Keep in mind, I am a vapor n00b (thus my title). My only other experience is the VG Bat. These are 2 entirely different creatures and the experience of medication, are completely different. I do understand the science behind them, so can understand why the different experiences. Still this is mostly just my observations and what truly turns out to be a Magic Flight. (nice plug!)
First, let me say once again... the unit picked out for me (by *Delia*) is gorgeous. Its a light maple, having a striking dark streak, along the top left-hand side. Traveling almost like a bolt down the side, fading out towards the opposite end. Inspecting the bowl/trench area, I notice this one seems to have been bonded/folded better, which results in a tighter fit on the inside. The heating elements making consistent and firm contact with the mesh. Of course, on the bottom, is the awesome quote and a SERIAL #!
So I get it this morning (met the mail-carrier at the box), take it in, load it up. Been experimenting with different techniques. Now, my bud isn't the driest. Its personal taste (literally... I like that 1st fresh rip). Obviously, as a legal medicinal patient... I get my hands on some truly awesome bud. Heck, there's so many varieties I probably can't remember half of what I smoked over the last 3 months. Maui Waui was my least favorite... which was a Godsend back in the day. While I do like the experience of the high... its primary purpose is medicinal. I use it for pain relief (post-op open heart), anxiety and depression. Its legitimately taking the place of 3 pharmaceuticals (Tramadol, Zanax and Paxil). I prefer Sativa dominant hybrids. The Indica helps the pain relief and the Sativa is the ultimate in feeling upbeat. I describe it, as letting go of your good feeling inhibitions. I've been locked up inside this emotional box for close to 2 years, building up such anger/grief/self-pity and my new medicine has truly, helped me deal with the stages of grief and move onto acceptance. I tend towards a 70/30 mix, I like to be up and about.
Enough about that, mostly wanted to explain what I smoke in this fabulous contraption, before explaining the totality of this fateful trip.
Load it up, with whatever the heck it is I'm vaping (going to try some Green Headband tonight. big, meaty, dense buds). Battery, check! Push and hold, count to five, watch for my personal preference (thickness of vapor). I don't really like big billowing hits. I live by the wisdom of, if you're blowing it out, its gone to waste. My experience with the VG bat is really unsatisfactory. I just can't seem to come up with an acceptable method of using it, it feels like too much work. Plus, I always got inconsistent results with my ABV. The MFLB however, is almost always the same consistent color. I liked the portability of the Bat... I LOVE the stealth, look and portability of the MFLB. Before I take a rip, I can watch that plexi... see it get that perfect opacity then apply the slightest suction to the stem, hold battery a few more seconds, release... then slowly draw out any errant vapor (its errant, if its not in my lungs. lol). I would pull this thing out almost anywhere and hit it. Someone asks. Its a herbal blend. Which is accurate and not-so accurate. None of their business, however. lol
As for the "high". The MFLB, feels to me to be much more of a head high. Real clean, however. With the bat, it would induce couch lock, about 1/2 the time. With the MFLB, I feel much more energy. I feel sharper mentally. I'm more at ease also, in dealing with day to day stress and family.
Its not all, butterflies and rainbows, though. Oh no! The MFLB seems to have one truly big drawback. I could vape all day with the VG (huff, puff)... and never experience this. When I use the MFLB, holy shit... I look STONED! Visine is MANDATORY. OK, a sliiiiight inconvenience. But, damn... the whole idea of stealth is not letting everyone know, you're ripped.
I want to mention another thing. I have combusted 2 trenches with the MFLB (though many more in the VG). However, it is because of my preference in my grind. As I said, I prefer my bud not to be completely dry. I like a bit of sticky. This causes a bit of stickage, in the grind, I've left the battery applied to long a couple of times and lit those little clumps up. If I take care between draws, with mixing it up. I avoid this.
To wrap it up, this is a match made in Heaven. I love the simplicity, yet pure genius of this device. I love the aesthetics. I love the family attitude of their entire company, towards their customers. As I've noted in another post. They build lifetime customers, from earning loyalty, by giving it up front. The MLFB fits every one of my needs, my lifestyle and my personality (I look simple, but damn I'm smart ;-). One of my best purchases ever, even if my money went to a first-class, a-hole crook. Funny how life works that way.
EDIT: I want to add, about the "Click-Lock" BB modification. It works well, however I never experienced the old design. I kind of tend to use the rubber-bands anyways. Also, this type of design typically leads to 1 of 2 things. Either the BB gets gunked and stuck, or the BB wears a groove in the plexi. We'll see over the long haul. Even if either were to happen, it wouldn't change my mind.
So no charge is running thru during general handling - only when I turn the battery around and push in hard enough to compress the foam ring (in my version of the mflb). Then the circuit completes, and the resistance of the screen to the current produces heat - if I understand it correctly. But the coin only increases the resistance to the charge, and - thereby - provides another heating "element". No short circuit! Just another bit, added on... 
