RE: 2 Cams vs 1 Cam
Im a one cam guy so Ill start.
One cam
1----Solid back wall. Easier to find a repeatable anchor.
2----Usually quieter overall.
3----I think their easier to tune and keep in time. If you use a quality string and power cable,take care of them and maintain them,the extra string length and stretch is a moot point.
4----From my experience shooting both, ones are less hand shocky overall and theres less felt recoil at release.
Now the training wheel guys can get on and talk about supertuning, more speed, tiller tuning, perfectly level nock travel, less agressive draw cycles, and all the other mystical stuff. I think they both have benefits and missgivings. Its more a personal thing. Twos seem to dominate indoor, and ones 3D.Then again singles have won Vegas, and twos have won in 3D. Once again it depends more on the indian, and less the bow.