A copper hybrid if your sole desire is to create the biggest clouds would probably be the best bet. Make sure you learn about batteries, get an ohm meter and some Sony VTC4s. I have a copper SMPL, Praxis and Stingray X and I personally think the Praxis hits the hardest. I attribute it to the lack of threads at the bottom of the device but I may be totally wrong haha. Most of the time a good mech is a good mech and it comes down to things like finish, looks, hybrid or not hybrid, price and the name of the device. Are you apposed to clones? I ask because if the answers no you can go on FT, set a reasonable budget and walk away with a few mechs depending on that budget. If you can afford 100$ you can probably get 5-7 devices and that will give you a chance to try a bunch, see which you like and if you want get the authentic. I own an authentic Praxis but I got the clone first to make sure it was what I wanted and tbh the clone is not very different, my reasons for buying an authentic had nothing to do with quality I simply loved the device so I felt $150 to support the OG mod maker was not a big deal. YMMV