I've had a Porter Cable basic Ni-Cad set (drill/driver, circular and reciprocating saws and flashlight) as the basis of my power tool library for forever. Some new knockoff batteries I got from China gave it a new lease on life. However, I'm thinking I want to go Lithium. And I want to be deliberate b/c I would eventually like to move ALL my power tools to one system (and then another Kobolt for yard tools). I feel like a good section of my limited work bench is currently wasted with four different chargers. Anyone made the switch? What do you have and what do you like/dislike?