I guess thats because of the Volcano which is regarded as the best vaporizer around
Boy do you have to spend some time reading around on this website....... The Volcano is the only vaporizer known by 99% of people who don't vape / combust exclusively - hell even to this day whenever I tell someone I vaporize exclusively they go "oooo, the thing with the bags??"
From what I gather about the Plenty - it requires a large load - not the best for solo use, I've seen several people start with the S&B Plenty and migrate to other vapes at half the price
The Mighty and the Crafty are still very new vaporizers - if you read the past month or two of feedback, you'll see that Storz and Bickel is still working out some bugs in the design. I myself am interested in the Crafty, but I'm not going to bother investing my money in one until I know it's a stable reliable vape.
Just because you tried a Pax doesn't mean you've tried all other vaporizers on the market. The Pax is a stealth vape - it sacrifices flavor/performance for the sake of stealth. To be honest, I was underwhelmed by the PAX myself (for my stealth needs, I opted for the Indica)
Just like
@max said - don't believe that spending more money means you'll have a 'better' vape - performance is not directly proportional to price. I have a $100 butane powered vape which is more efficient and enjoyable to use than my $250 electronic portable vape.
Storz and Bickel is an ok company, but there are so many more companies out there offering high quality vaporizers for a fraction of the price, and sometimes offering a higher level of customer service than what large manufactures like S&B offer.
Take a few days and review some other very popular frequently mentioned vapes on the "which vaporizer should I buy" threads posted every week on this site. Guaranteed no matter what vaporizer you purchase will not be the last vaporizer you purchase. Hell, go buy a used Arizer Solo in the classifieds for under $100, and I bet you'll be happy as hell with it