Hyper 8 is the newestl from Ofna, mbx5r is the newest from Mugen, Cl-1 is the newest from GS.
Hyper 8- ugly body, but from what I've see with most Ofnas, is that they LOOK well built. Iv'e never owned one so I cant say for sure.
mbx5- handles great, looks killer, but parts wear out fast and still needs upgrades before it hits the track( stock, original kit needs an ackerman plate, front shock tower)
Cl-1 - haven't driven it yet. Mary Korn is always in the show at big races so the car must be good.