Amazon offers the Philips Sonicare DiamondClean Rechargeable Toothbrush in Black, model no. HX9352/04, for $154. Clip the $20 off coupon to drop it to $134. With free shipping, that's the lowest total price we could find by $36, although we saw it for $34 less three weeks ago. It features five brushing modes, two brush heads with caps, a charging glass and stand, and USB charging travel case.

Update: The price has dropped to $150 before coupon, $130 after.