I believe the "issue" would be more as to what will give you the best "Broadcast Quality" not so much "which camera"... Needless to say "the best" anything is going to cost you some serious cash. I'm betting however, few of the people here invested more than a few hundred dollars on their camera (less than $1,000.00) while the "best" retail for several thousand. I know of one working pro that depends on two cameras that cost well over $5,000.00 each for shooting his live shows (he gives copies to the people that help out on stage).
The other three things you need to look at is the Lens, Filters and of course Lighting -- which combination is best for shooting the action under the setting you are working under? What works for outdoor shoots on a sunny summer day in Las Vegas is what will give you the best results when working a dimly lit pub or grunge joint... while you can use the same camera lens & filters will have to be changed along side adjustments in the lighting in the majority of instances... that is, if you want to create the "Best" possible video rendering of Your Best material... which hopefully, everyone else will see as being "The Best" magic they've ever seen... but as Billy McComb once pointed out (I believe he was echoing Max Maven) "Good Magic is like Good Sex -- Just Harder to Find" so the bar is resting rather high for you to be "The Best" and worthy of all those other "best things" used in supporting you...
Think about it.