96% of killing a deer is location, scent control, movement control, staying quiet, and shot placement. Weapon of choice (especially among weapon groups) is a very small factor in hunting. Proficency with the weapon is the key. ANY crossbow over 100lb will kill a deer. A good hunter with fair equipment will kill many more deer than a fair hunter with the newest most expensive equipment. Everyone (myself included) should have the goal of becoming a better hunter....but that doesn't mean that if you can afford it you shouldn't improve gear if you want.
As far as choice of xbows...it is just that your own choice. I would be willing to hunt with any bow that wasn't good enough for anyone of you (I will even pay postage)
Mitch