Makita has had the same battery setup for a good long while now (the 18v batteries are something like 15-16 years old), and they have a ton of really good, well thought out tools in the 18v (same as DeWalt 20v) lineup.

Plus, the higher power tools still use the same batteries, just two, rather than forcing you to but yet another set of batteries. I wasn't as impressed with dewalt's tool lineup.