The Mini and the Etek are gonna be the most reliable of the markers you listed. Purely because everything else is basically a spool... I really want to like the Dangerous Power guns, I loved my FX, but I've seen too many of them not work out of the box... With that said, their guns are awesome when they are working. I kinda feel the same about the Proto guns.. Especially the basic Rail. You really need to be up on the maintenance or they don't wanna work.