In my opinion, I'd say Proton>Etha>Mini>G5>G4
Having owned both a Proton and the Mini, the only two things the Mini has over the Proton are efficiency and the board. Otherwise, the Proton is smoother, quieter, has a better feedneck (Amazing feedneck actually), better ASA, tool less bolt removal, a better trigger, and in my opinion better ergonomics.
You may call it fat, I call it bounce padding.
If I say "the safety frame claim is bull****" I'm not ripping on PE, the SL8R is my favorite gun EVER. If I say "DMs are overpriced" it doesn't mean Dye is a bad company, I want an NT11 in the worst way.
However, when I say "The Vapor is overpriced and not very good" I mean it. I won't have one unless it's cheaper than what I can get a G5 or Proton for or free.