Salt, if you want good sights for a reasonable price, check out the Cobra line. The Sidewinder series is just phenominal and the new King Cobra single pin and King Cobra 3 multiple pin are awesome as well. They are ultra bright, very rugged and durable, and easy to adjust.

Vital Bow Gear is another that makes some awesome gear. I have the Star Track and couldn't be happier. But if you don't want a single pin slider, check out the Triangle. Again, very bright and well built. The downside to VBG is the price tag. They are a tad pricey, but are incredibly good sights.

First of course, you must decide what type of sight you want. Single pin, multiple pin, wrapped fibre, pendulum, you get the idea. Once you have that part narrowed down you can begin checking out different sights in your price range.