For me the stock 800mhz kernel was very smooth, but i like to run at least 1000mhz. the slayher kernels all had some lag, but they are as smooth as a babies bottom on 1.4. So i tried Chevy's 1100mhz and now 1.5 is very smooth.
Rom: LiQuID FroZeN YoGurT v1.5
Themed with Smoked FY 1.5
Kernel: Slayher LFGv1.5-1100 LV Kernel