Personally, I like to keep 3 lenses. Clear, amber/yellow, and a mirror/smoke. Clear is great indoors and depending on how well you can see better for yellow paint. I honestly don't like playing a tourney unless I have a clear lens in case I start doubting my eyesight which has cost my team a few points where I couldn't tell the difference between stained fingers and a yellow hit.
I like smoke/mirror for bright days since it'll darken it quite a bit and you won't have to worry about sun glare. If you're going to be playing woodsball I'd suggest a yellow/amber lens or just a clear lens though.
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.