No fighting words to be had as all that's beeing said here is true
The reason why i still love my old airbrush is because it has a larger needle and is greeat for large surface work like priming and base coats, also makes shooting metalics and anything textured way easier. I started with the badger 200 and upgraded and kept the old one that's all, i'm not saying you need 2 airbursh
Botttom line is all about how much you wanna pay, the only thing i'm going to add is....If it looks too good to be true, it probably is. The 20$ airbrush on Ebay often have cheap plastic parts that don't stand up really well with some paints or solvents.
Google revues before you buy, Youtube is a mine of information too!!
Good luck!