I tried it for the first time a couple of weeks ago and I was impressed by how clean it was: there was no smelly smoke wafting around in the air, it didn't destroy my taste buds like smoking a joint did last year, and my lungs weren't messed up afterwards. The last point is important to me as I do a lot of cardiovascular activities (sports, cycling, running, etc) and the first and only time I smoked a joint last year I was out of the game for about two solid weeks as my lungs were done in. I got a fright immediately after using the MFLB as it felt like my lungs had been damaged (they felt stiff and a little sore) and I was wheezy. But the next day all of that was gone and I was back at the gym performing exactly as I had been before using the vaporizer. So that's a massive plus for me as it means I can use it again without worrying about damaging my lungs. And I guess that is a major benefit of vaporizing in general over smoking joints or the like.
However, I don't think I used the MFLB properly as I didn't get as high as I did last year smoking half of that joint (say it was about 3.5-4 inches in length and quite skinny), which is the first and only time I'd used cannabis before my experience with the MFLB a couple of weeks ago.
Using the MFLB I only took about five draws from a filled trench. The trench wasn't packed down with too much and I gave the stuff a good grind using the grinder that came free with it. I watched a couple of videos of other people using it on YouTube and followed their instructions, particularly the method that this person used
http://www.youtube.com/watch?v=zZp9kprZF0c&feature=youtu.be, but I just didn't get as high as I expected to, and the hight I did get didn't last as long as I thought it would. Still, it was a highly enjoyable experience and I want to do it again, only this time I want to get higher. Should I just take more draws? How many draws do you tend to get out of a trench?