Re the Inhalater, its drawbacks have been discussed in the Inhalater forum. Re the Pax, you may well be right. Anyway, what suits one person may not suit another. Personally, I like my Solo, except it's not fully portable. I also like my iolite, except it's noisy and has only one temperature setting (190C / 374F), and my MFLB is a great stand-by, but too fiddly for everyday use.
Thanks man, just when you say "beset with problems" it may lead people to a poor impression. Drawbacks is better
Back to to the Pax! I've noticed a a return rate higher than i'd like, but i'm also noticing a far large majority worshipping this little device, which adds to my stoke.