spend the money, then. rd's aren't 100 dollars worth of an upgrade over bulletproofs, if you ask me. you will be grateful in the long-run.

business cycles is a good starting point, and jon, the owner, really knows his stuff if you call him up with some questions: http://businesscycles.com/trcomp.htm#crankset

if you are determined to buy new, the stronglight crank arms look closest to your budget, but i know nothing about them. maybe a search of the forums can yield more information on them, but i think most people will recommend that if you are getting into that price range you just splurge for the miches or the sugino 75.