@invertedisdead I have been using the following presets in my hexnail: 20mm coil and standard heavy settings, for my 25mm coil and gavel. The coil being setup with the end of the pigtail on the bottom edge of the dish has been giving me really stable temps and I get really good dabs at 540 to 545 set temp. This is showing the dish temp at 378 to 388. Since the temps are soo low, I dont have any issues cleaning up as I can Qtip anything in the dish right up before it has a chance to flash to the quartz. Reclaim is almost nothing and I only really see it when I am using a high airflow cap. I have converted several people and they have all said it was what they had been looking for.
The main downsides are:
1: Chance of breaking bangers while learning how to fit the coils properly
If the coil is a little loose when cold, it will get looser when heated up. This can cause the coil to sit at a slight angle since the coil arm is the heaviest point. I have found that the coil needs to feel like a syringe when depressed while being slid over the banger(Slight resistance, but smooth feeling) I have also been using the Errlectric coil clips(Home made style S clips and O rings) to hold the coil arm in place and it has stopped my issues with the coil arm causing the coil to get angled when hot.
2: Bangers can break. just because
I have had hit and miss results with some bangers and so far the only 1 I have had no issues at all with are the Highly Educated gavels. They also give an amazing dab since they have the micro bubble bottoms. I have yet to break one of those and currently have 2 in my rotation.
FatDabco bangers are cheap and work really well. They also have 50% off sales fairly regular and you can scoop 2 of their 25mm bangers for 60 bucks. I like them because it doesn't hurt when you break a 30 banger. But it does when its over 150 =P
3: Chance to mess up the coils when adjusting to fit the banger
When adjusting the coils for bangers, you want to keep the coil tight together and just tighten the coil by doing little twists of the coil Clockwise will loosen and counter clockwise will tighten. When adjusting the coil you will also want to make sure it is even as sometimes the coil can have one of the sections a little out of alignment with the rest and this can cause the coil to not fit correctly
Here are some pics of my gavel for reference:
http://s893.photobucket.com/user/mutten840/library/bangers and coil
The upsides are: Endless
1: All caps work. I have not had any issues whatsoever finding caps that fit the 25mm bangers. They just accept pretty much anything =)
2: Once you figure it out you wont break bangers very often if at all. I have an 8 month old Toro grail and it is still looking and working like day one.
3: No drop downs needed
There is no heat at all on the joint and you can hold it in your hand and feel it is cold to the touch. All the heat stays in the banger and so you do not need to run drop downs. These also weight nothing and so you can use any pieces you could not use with the liger or halo. You would be amazed at how much better most pieces work without a drop down in the mix =)
4: Temps hold strong
My units are on all day and the temps hold strong on the quartz bangers. I will see the temp float in a 5 to 10 degree average, depending on if I have a fan on. If not it will be tighter and I can do back to back dabs on the bangers and never need to wait for the temp to get back up
I have tried the following banger sizes
20mm: Too hot and narrow
24mm: Still a bit too hot and narrow
25mm: Perfect size and width
30mm: Too big and is honestly larger than anyone needs, unless you want to serve soup with it =P
The 25mm is the Goldie locks banger out of the pack in my opinion
I have not gushed over the bangers as I know several people consider them old tech
..
..$) overnight or a little bit longer and clean every 5 to 7 days or more depending on use for a nice clean crystal clear brand new looking banger 
