I've had my eye on the Pax, and it's a bit pricy for my budget. I am looking for an itty-bitty portable vape that can fit into a pocket or small purse. I wish the Arizer Solo was itty-bitty. But since it's not, what are some good small vapes to research that are cheaper than Pax? I want to be able to use weed, oil or hash in it. Prefer convection, but not overly picky about that.