Which bipod will depend on your most common shot scenario's when hunting deer. If standing or sitting, Stoney point has several models to choose from... including some with telescoping legs for various heights that do not attach to your firearm. If sitting, bench or prone, some of the best are the Harris bipods that usually are attached. Either can be found easily with an Internet search.
I never used bipods for deer/elk hunting, just shot offhand and with a "lean" if handy. But then all that hunting was spot and stalk while hiking many miles over steep mountains, so I didn't want to carry something I didn't need. On the other end, my preference for shooting off a bench (pistol or rifle) long range is with the Harris BRS bipods rather than bags or a mechanical rest.