Thanks Frank - that's a really useful post. You're quite right about the pipe - some work,some don't. some fail - but when they work, wow! Nice tight pipe-like draw. The main bind with the mini-pipe is that you can easily use a battery in 2 hrs and it sometimes takes 3 to charge! This is why I have 4 batts.
Wouldnt that be a good aspect of the big review!! Battery Life. How about it Frank you up to killing batteries????? vape em til they are dead!! or we are