The Javelin Pro Hunt TAC is a solid bipod and worth the money from what I can tell so far. It is light and feels well built. The ability to carry the bipod off the rifle and quickly attach it when needed is awesome and the magnet is super strong. My only complaint is the lack of good options for packing the bipod. So far the best option I have found is Razco. Spartan sells a holster by Redkettle but it seems pretty flimsy for a $300 investment/bipod, that you definitely don't want to lose in the field.
Pros : light weight, off the gun carry, well built, easily swaps between rifles, and lots of mounting options.
Cons: limited carry/holster options and the price is a bit steep.