Chicago Pneumatic CP 7748. I bought it at the same time as an IR 2135QTIMAX, I returned the IR. It's much cheaper, more powerful, to me it feels nicer, and it matches all my other CP tools.
For a 3/8 ratchet, Chicago Pneumatic CP 7830Q. Powerful, comfortable, quiet, what else do you need? I have the 1/4" version, and it's awesome. If you don't want to deal with a ratchet that puts out 90 ft/lbs, then a CP828. That's what I use for a 3/8 and it's great.