Which ever one fits you the best ! Well really, ya gotta shoot a couple different styles to know which one suits you. Go to some matches and hang out, most guys will at least let you sit behind their set up, to see how it feels.Are some stocks better than others? Theoretically I suppose? but if you can't shoot it and control it comfortably what's the difference. Again, better to try before you buy,same with actions,scopes,sand bags and rests.
joel