More experience, perhaps favoring the cheap tool route...
Today I used the Sawzall I bought on a lark two times, first to cut up a down limb at Mom's house, then at our friends installing cabinets with a long flexible blade to trim off shims flush with the wall. I also used the saber saw and circular saw (another thing I bought, just like what the hell, it is $40...) cutting countertops. And in the process of cutting the countertops I used both of the flashlights. These portable tools are way more handy than I thought. That Dewalt combo Tom posted the link to would seem awesome. Anyway, just glad I got a bunch of options instead of having one super-duper drill that will do anything forever, not saying that is a bad thing.
Another thing about these, once you take the plunge with one system you can get enough batteries to finish a project. With five like I have you can start out with several tools ready to grab, but also be pretty well assured you will not be unwinding a cord to finish the project...