I don't consider any of them to be the 'best'. They're all different. Wrestling has AWESOME take downs - I've been thrown around the room by wrestlers before, I just don't think anything compares to their takedowns. BJJ has excellent submissions which wrestling doesn't have - it doesn't have any. Sambo guys are excellent at leg locks, generally much better than your BJJ guys. As, Andrew Green said: Why restrict yourself to the methods and techniques of one style? Take what works I very much agree with this, this is what we're doing at the moment, we've got our boxing, muay thai, BJJ, greco, Judo. We take techniques from everywhere!