@peng and
@Dj7675 - Thanks for your replies and time on the X3500, yes I read and understood the test report before I posted.
The point I was making is currently the best prices I can find on X3500 is $999 (new), and X3600 $999 (factory refurb with 3-year Denon factory warranty). IMO at the same price and warranty it just makes no sense at all to go with the 3500, and even makes no sense to go with X3600 *if* the 3700 tests well and it has all the new goodies for only $200 more (even at full retail, but no way would I pay that I wait for the deals lol).
If someone could get a 3500 for $400-500 it may be worthwhile for some...me I would still go 3600 or 3700. My thinking anyway.