For budget, I don't think you can go wrong with Omega boars. I have the 10066 which is a little on the smaller side, which I think I prefer. You can get them for about $12 shipped. If you are willing to spend just a little more, say around $20, then I've heard nothing but good things about the B&B Boar. It has a pretty standard Omega knot, but everyone loves the handle design.
I've also heard some very good things about the Muhle and Kent Infinity synthetics, but can't speak from experience on those.
West Coast shaving has all of those options, and some of the best prices.