What is the best crossbow out there?

I was thinking of getting a crossbow for hunting. I wanted to know what is the best you can get for price, power and accuracy. I also wanted to know how much that would cost. Also what's the best bolts for hunting you can get and how much do they cost. Also are these crossbows able to take down bigger game, because i would prefer that so I could hunt bigger game like moose if i ever do. I heard excalibre is a good crossbow but I have no idea.