So far, after using and burning a plethora of cordless tools as a professional construction worker all my life, I am very satisfied with my personal use Makita MTX 6339D drill. Very high quality in design and construction.
When purchasing cordless tools for a job, Service cycle, power, and battery compatibility are equally weighed Waiting for a single battery to charge for a single tool means downtime for the job at hand. Usually the DeWalt 14.4V cordless tools (had) the most interchangeability between tools such as drills, grinders, and trim saws. If torque is not needed (and I consider it a waste to try to achive high torque on a cordless when a corded tool will not only supply but is the PROPER tool ) the availability of multiple charged batteries on hand trumps all.
Cordless tools have become more a consumer item than an industrial commodity but the basic rule of "you get what you pay for" still applies. I have no recomendation though.
For industrial corded tools I have a simple rule - Drills: Milwaulkie, Power Saw: Skil worm drive, Sanders, routers, jig saws: Porter Cable.
Also, the less gee-gaws, gizmos, gimmiks, and propriatory attchment items the better.