sprocketss, if you are new to touring and not sure if you like it, the nashbars or other reasonably priced ones will work fine depending on your pannier type. I wouldnt suggest getting expensive ones if touring might not be your thing or you do once or twice, but your budget concerns are yours to figure out.
You can have a fun time with reasonably priced racks, and could put saved money towards other camping stuff etc if you need to buy a bunch of stuff anyway.