I use arista fixed grade papers, and find I get better results than when I use kentmere VC, and Kentmere is the more expensive of the two.
I'm not sure though, if the increase in quality might also have something to do with my not putting a less than perfect plastic filter in the light path. Not knowing why doesn't bother me though. Fixed grade arista paper is the cheapest paper I can buy so it's a moot point.
I intend on purchasing a ream of each of the expensive papers to test just which ones give the best results, once I build up a more substantial portfolio of suitable negatives (I've been shooting only about a year), and the smell of burnt plastic dissapates from my wallet(univ. student).