The hyper 8 is the only one that will cut it at racing.
I don't know for the MP7.5 III but versions 1 and 2 sucked big style. Very weak in the drive train and corners cut everywhere to get it down to price.
The others are all low end bashing buggies that will be difficult to get parts for.
The Kyosho design is also quite old (their current design is the MP777 wc).
The hyper 8 is a newish design and can be upgraded to pro spec or even the new 8.5 if you buy the extended chassis.
Hope this helps