I think you should go to a shop and try some out. There are a lot of good ones out there -- Specialty Archery, Doinker, Easton, Cartel, Beiter, etc. Primarily, as a shooter with an open class set up, you're going to want a longer one with some decent weight to it -- the point is to make it easier to hold the bow on the target. The v-bars are for side balance. My bow has a tendency to lean to the right (as do most right-handed bows, as that's the side you mount your equipment to and the side the mass of the riser is on). Adding a left-sided bar or a complete v-bar set helps with this.