5.7 Aftermarket 80mm Cable Throttle Body Options

So, I see a bunch of "universal" 80mm throttle bodies in about the $100 range, and then something like a BBK 5.7 unit for $350. What does it have that the others don't? I'd appreciate some input. I think I'll be Megasquirting mine, so I'm gonna be sourcing some parts.

Thanks in advance!