I picked up a SR-5 G2 from a prize table a few weeks ago, and used it in my club match last weekend. It is an extremely well made bipod, and is comparable in quality with the Atlas PSR that I have been using for four years now. The model I have is tall, but I have it mounted on an AX where it sits closer to the barrel. I find I do not have to extend the legs as I do with the Atlas. I also prefer the cant and lock feature over the knob of the PSR. It is very quick and easy to operate, and is easy to put load into it as well.
They offer soooo many bipods in their product line, I see where it can be confusing getting exactly what you need.