Hi, I am nearing completion of a .223 rifle build with a MDT ESS Aluminum chassis. My stock is more oriented to PRS but I plan to use it for benchrest and (very) occasionally prone firing. The front of my rifle will be supported by an Atlas bipod. I'm currently shooting for recreation only, so I competition imposed limitations on weight or configuration. I know 'best' rear bag is heavily subjective but I'm trying to keep my expense below $70 and even at that price point there's a lot to choose from. Anyone have good experience with a rear bag under that price point? PS-My butt stock is more hook-shaped than traditional, which may lend itself better to one shape than another. Thanks in advance for your help.