Hey what pen do you have/what have you tried?
Currently I've been using the brand 'Vaped' with an eGo twist battery and I've been pretty happy with it. The only thing I don't like is how deep the ceramic bowl is-alot of bho melts down into it and gets slowly cooked into a reclaim like substance. I still manage to get about 3-5 decent, nice tasting hits per dab but some always falls into the abyss, lol. A lot of them are so similar in this way, with the deep ceramic bowl under the coil.
I also have a glass dome style one too. I really like that one because you can see whats going on and tilt/twist/move the pen to keep the dab right on the coil and you get really nice consistently tasty hits from it. It has the same exact ceramic type bowl, so even with the ability to see what's happening when you hit it, some STILL falls into the abyss. Now you can get the coil hot and tilt the pen down so it melts onto the coil, but like I mentioned, usually it's already 'claimy' tasting by then.
I absolutely love my vape pen, it's always in my pocket, and I use it more than my oil rig-but there are some major design flaws in them. Has this also been your experience, or do you have a better one you can recommend?