Same for me with the Vibrate issue. I'm using ChevyNo1 1100 LV kernel. Battery Life with Setcpu is dismal too.
I've tried the stock and Chevy kernels, but for my money the best one is CorCor. I'm running the 1000lv kernel, and it's been great so far. I'm using the SmartMoD governor, CPU running at 1ghz max, and have run the SuperCharger script. I'm running Go Launcher and have 90+ applications installed. While I wouldn't exactly call it "snappy", performance is definitely acceptable, and I don't have a lot of screen redraws.