There has been a bit of discussion lately about bipods, so here is my take on what my preferences are with suggested retail prices.

In the photos below left to right , favorite being on left and progressing to least favorite. + after price = good to go. - = not worth much.
Comment on the S7. Most expensive, heaviest and least desirable. Reminds me of a Starwars enemy walker, outclassed by everything else.

1. Atlas PSR BT46-LW 17 319.95 +
2. GG&G QD HD XDS 238.90 +
3. Harris HBRM with rail adpt. 135.50 +
4. S7 7-9" rubber footed 389.95 -