The raptor didn't even cross my mind. I was only listing the bikes I have experiance with. I've owned, and have seen mojaves tortured to absolute **** and they still run. In my mind, a good sport quad, or any quad for that matter, is one that is fun to ride, has little to no probs, was (maybe) innovative for it's time, easy to work on (for the most part) required little mantinance, and was something that ran for near ever. I have either ridden, owned, or have seen many of the bikes in my list in action, having the **** ridden out of them, that's where my list comes from.
Now, if you wanna talk about the most innovative yet "best" sport quads of all time:
Rapt 700 (biggest bore PURE sport quad, efi, aluminum frame...)
kfx450 (efi, aluminum frame, lower control arm mounting style, REVERSE...)
Mojave (DOHC, liquid cooled, cv type carb, 1st to do it ever..)
Banshee (parallel twin 2 stroke, need I say more...)
Quadzilla (the name is enough, 500cc 2 stroke, power valved I believe...)
450r (uni cam design...)
Warrior (1st big bore 4 stroke, elec and pull start, reverse, long travel susp, 6sp...)
250r (chassis design that is still being used to this day, and they are badass...)
LT230E (the fun 230cc of the quadsport, with the easy to use semi auto clutch...)
250ex (1st to use a manual clutch in conjunction with semi auto unit...)
That is my list for that catagory of sport quads.