I'd recommend seeking out the best in each category and buying a nice toolchest to put them in.
My favorites are Estwing hammers, Klein screwdrivers and Channelock pliers. Over the past five years, my father and I have gutted and renovated a mess of our apartments. We're nearly done, and I've enjoyed it. My day job is white collar deskwork, so swinging a hammer is always a nice break.
Though I treat tools with respect, these have been put to the test, time and again. Years of hard work, and they hold up.
For electrical tools, I prefer Milwaukee, Metabo, Hilti, and Porter Cable. They hold up.
If you want nice rulers, calipers (exceptionally hand for DIY casework), squares, etc., buy Starrett, they're excellent.
If you're interested in fine woodworking tools, look no further:
http://www.lie-nielsen.com
Exceptional tools that are as good as they look. I've put heavy use on a #4; it's an amazing tool.
Some further advice: don't buy your power tools from Home Depot or Lowe's. Even the big brand names manufacture cheaper models for them because they leverage the price. I know it costs more up front, but you'll want to buy tools from a real tool store or an online one. Yeah, you might pay another $40 for a drill, but that drill will not quit on you. The brushes will wear out eventually and so will the cord, but good tools don't fall apart. You really do get what you pay for.