I am currently looking at the Yamaha A-S701 with a NAD C427 tuner vs. Yamaha R-N800A. My concern is in the quality of the tuner in the reciever. I miss the 70's and would love my old school stuff back. I wish money wasn't a issue but would like to stay under 2K. I could really use unbiased opinions as salesmen want to tell you a tail. Thank you, Dave