they say the pax is the portable to get but you have to watch for fakes, and its kinda pricey. look at some of the reviews of it, it`s a nice piece as well. small fits in a shirt pocket its also convention heat like the solo. there's another that's rated pretty high and its the launchbox, but you have to deal with batteries, again the heating is similar to the pax and solo, but its even smaller size. these are the top 3 rated portables by a few different sources. ck out utube they have tons of in use reviews and you can see the clouds they put out. theres a couple of guys on there that have reviews on just about everything out there, they do side by side test its great to see how they stack up.