In my opinion, the NAD T753 and the Outlaw 1070 are the best of the $900 receivers when it comes to musical sound quality. However, I wouldn't purchase a new a receiver that was not software upgradable (I'm not sure if the T753 has this capability or not).

I used to own a T742 and T752, assuming the sound of the T753 is similar to those models I'd characterize the NAD 'sound' as being more in-your-face than the Outlaw. I found vocals to be very forward sounding with the NAD, bass to be somewhat heavy and the highs seemed to be rolled off. You may prefer this type of sound, or you may hear something completely different

The T753 model has also been out for over 2 1/2 years and is probably going to be replaced with a newer model soon. If you do puchase one, you should get a substantial discount on one, or wait a while longer for the new line to come out.

The 1070 has some nice additional features such as bass management on analog inputs including an 80Hz analog crossover, lip-sync delay and software upgradibility. I also thought the 1070 was livlier than the NAD with movies.

The NAD T753 does have more power than the 1070 though. I do miss the T752 on those rare occasions when I could crank it up to ear-damaging levels for a song or two.

Here are a couple of reviews by the same author for the NAD T753 and the Outlaw 1070:

NAD T753 Review

Outlaw 1070 Review

Good luck!