I recently had an opportunity to shoot with a Harris Bipod and it was a good experience. I see some less costly versions different places. Can anyone give me some reviews, input and opinions on their experience with their bipods that attach to the rifle swivel?

Looking at something like the 13-24 inch model but am looking for pros-cons on all lengths.

I use the Stoney Point rapid bi-pod. It clicks on and off and swivels and is really nice. I have one for prone and one for sitting/kneeling and they interchange perfectly. The only drawback is the little nub that the bi-pod clicks on and off of the rifle kind of digs into you back when carrying it sometimes but that is partly because I'm tall and the sling that I have don't adjust far enough. Of course the little nub probably isn't near as bad as if the entire bi-pod was attached to it.

I use a Harris on my rifle and love it. I only use it for prone and bench shooting. I like it because it attaches to the fore end sling swivel with a thumb screw. It takes like 1-2 mins to attach/detach it. The extendable legs can be set at any position up to full extension with a set screw. If you expand the all the way you push a button to and they collapse in. The only real con I've found is the price. I paid like $70 for mine, but I love it.

The Harris's are definitely more expensive, but you get what you pay for.