I tried the starter brushes from Crest and Oral B, both were Ok but not great.
Currently, I'm using the Arm & Hammer Sonic Spinbrush (
http://www.spinbrush.com/Products_SpinBrushSonic.html) and it does the best of the 3 so far. I'm too cheap to spend a ton on a toothbrush, so chances of me trying a high end / rechargeable are slim.