I have found that Scott's Roms are amazing. As a note - if your battery life is terrible (i.e. 5-7 hours or less on stock battery), go and get your phone replaced first. I had a bad Rezound for my first one, and I had bought the extended battery and only got 10 hours max, even with the extended battery, tried multiple roms, and nothing worked. Finally had Verizon swap my phone, and now I get at least 2 days off the rezound extended battery, and at least 20 hours with the stock battery (even when using 4G all day and watching youtube, etc).
I'm on CleanROM Professional edition 4.3 (haven't bothered to upgrade yet), and it is by far the best one that I've tried (tried other roms from scott, BAMF, and Ineffabilis). You can go with the standard edition if you like sense stuff, I turned most of it off on mine but that's kind of a personal preference. Bluetooth works flawlessly, and it has awesome battery life, no need for underclocking or anything else.