For those of us on a strangled budget Harbor Freight (www.harborfreight.com) has lots of somewhat questionable quality / foreign tools at a very good price. The 4 inch angle grinder has lasted me some 6 years including a plumbing remodel. Things like 3/4 inch socket sets that would be hundreds elsewhere are pretty affordable.
Cordless tools are what come in handy for myself - sanders, drill or small cir saw.