I'd personally spend a bit more on the Revolution DI over the Rogue, no experience with the Sig but I've never been a fan and it's about two pounds heavier and physically larger overall. You get a number of improvements with the Revolution and quality control seems to be far better. I have a few thousand rounds through my Revolution and it's run flawlessly the whole time with everything I've thrown at it. I'm now suppressed and the way to go with any AR is a flow-through design. I'm running the OSS HD-7.62Ti and couldn't be happier as it functions the same with the can on or off (so it may work really well with the Rogue and it's also POF's preferred suppressor). I think the barrel on the Revolution is of a higher specification as well. You get the full ambidextrous controls, billet upper/lower, adjustable gas block, tighter tolerances, a coated BCG and generally everything is slightly higher spec. It's also a 16" rifle-length gas system. According to POF, the Rogue twist rate is designed for higher weight bullets so that may be a consideration for you.
I've been experimenting with various bullet weights and I've shot everything from 147gr. up to 200 Gr. ELD-X. I'd say the rifle tends to like bullets in the 160-180 gr. range although it'll do well with lower weight bullets in the 150 range. I'm still trying to see if I can dial in a 200 grain and I've not tried any 110 grain rounds yet but those sound really fun. I've managed to get sub-MOA with everything from 150 grain up to a 167 with relative ease (4064 or less so with Varget).
I think the ACSS reticles are decent (I have two) but I've found the point at the tip of the arrow a bit nebulous and prefer a precision dot for hunting and load development. For run and gun, I'd lean towards an ACSS. Only thing I'm planning on changing is going to a Scalarworks scope mount as it'll handle recoil better than the Aero Precision I have on there now. I've briefly debated going with a 12.5" barrel (and a Form 1) but I've managed to hold off as I don't want to loose too much velocity.