I have always used CGminer too, and I tried BFGminer today on one rig, as I want to continue using multiminer, but the hash rate was about 40 kh/s less per card with the same settings. I didn't spend much time tweaking, but I reverted back.

Sad to see with so many coming into Scrypt mining now that we're stuck with no more updates. Hoping that the Scrypt fork gets off the ground, wish I still had some programming skills.