Yeah, I agree with LeMansAid. And let's remember that anyone saying one is an upgrade over the other is giving no more than their opinion. Those should be taken with a grain of salt, in all cases. One man's garbage is another man's treasure, etc. In my opinion, moving from one to the other is more of a sideways move than an up or down move. I can say with some certainty the T500's FFB motor is more reliable than the CSW's motors, but I prefer the wheel rims from the CSW by far. The FFB feel of the wheels is more a subjective thing, and everyone will have their preferences. I also like that Fanatec have easier on-wheel adjustments rather than having to fiddle with a configuration menu, and the fact that they offer fairly frequent firmware updates.
On a side note, I had had 3 separate FFB motor failures with my Elites and CSW before I replaced the FFB motors with Buhler motors (same manufacturer that makes the motor in the T500). Since then, I haven't had any issues at all with anything that wasn't my fault (I did overvolt the wheel on accident with 52VDC instead of 24VDC and fry a transistor on the PCB).