Clockworkmod is very good, haven't used anything else myself, it does what I need.
Make sure to get a version made for your specific device, though - it's custom tailored to each device's NAN storage partitions, etc. For me, there's only one option, and that's the CWM for the TC970 Le Pan 1 tablet. My Touchpad, now my son's, used CWM for the Touchpad, came with the installation package for CWM9.