Review (5/5): The same great brush at a better price
We have the full Sonic Complete (don't know it's full model #), which is wall-mountable and stores the brush heads. After 3-4 years, the battery doesn't always hold a full charge (enough to do the 2-minute brushing), so we ordered this model with the smaller base/charger. It doesn't have the "massage" feature we never used, and it seems more vigorous, but that may simply be because it's newer than the one we're phasing out. We use the new brush/motor in the old wall mount/charger and now have the more compact charger (which comes with this one) for travel use.