I don't think you'll have any issues with your new grinder - it's a very well thought-out and built machine. I, like many others it seems, just get a little itchy when the guy selling something says he wants out.
I had the chance to see it at Blade Show last year. I didn't feel it was as nice as the TW90 or Northridge, but it's not fair to pass judgement on subtle details at a trade show setup, I don't think. Hardly a good environment to demonstrate stuff in. At least, there weren't any obvious issues with it, as there were on most of the other grinders I've seen out there.
You've mentioned this 'tracking wheel adjustment' feature... am I missing something? I don't see that this grinder has anything any different for tracking adjustment than a tracking wheel. They all have this, with the exception of the TW90, which tilts the drive wheel (superb idea, btw).