I have both a Raptor wheel and a Fast Track wheel.
Pros about the Raptor: it has a larger track/mesh (where the glider runs) which can hold two or three gliders, I got the side mount so it mounts to the side of my cage, the interior does not have anything poking out of it that can hurt my gliders or that they can chew on, I have had it for over a year and it doesn't wobble or bounce.
Cons about the Raptor: the track/mesh (where the glider runs) was bent when I received the wheel and I have not been able to correct it. :( (might have been a shipping error), it has a rather large white connector thing that connects the track/mesh. (gliders jump over it usually, because it's a side mount, hard to clean (but I would take that with a sturdy mount).
Pros about the Fast Track: it has a continuous track/mesh without the white connector thing like a raptor, I got the free standing so I can move it anywhere including out of the cage making it easier to clean.
Cons about the Fast Track: it is much smaller in width than the raptor, it has a small nub in the interior that my gliders have chewed on, wobbles/bounces (that's more my preference), without a zip tie holding it in place, it would move around the cage
My gliders love the Raptor wheel (which I got first). It took them some time to get used to the Fast Track (which I got a few months later) but now both wheels get used a lot. I think that both wheels are very good quality. I have 6 gliders so my next wheel is going to be a Raptor because of the larger width.
Hope this helps!