I have an older steel road bike (Raleigh Gran Course, 531C tubing) and am thinking about switching from D/T shifters to a modern 9 or 10spd setup. The frame is spaced @ 128 so I shouldn't have an issue slipping a 9spd in there. I'd like something that is decent, no Sora but won't break the bank.

How does SRAM compare to Shimano? What about the different levels of each?

Sorry if I'm asking such a "noob" question, but most of what I know is old Campagnolo, Benelux and other such components. Thanks guys (girls)!