Input on Marantz SA-15s1

I'm interested in hearing from Marantz SA-15s1 owners and their impressions of the unit. It's been available in the U.S. for awhile now and a number of them have been sold. Also, interested in comparisons of the SA-15s1 to the highly regarded SA-11s1. I've not been able to find much feedback on the SA-15s1 but what I have seen seems widely conflicting. Some say the SA-15-s1 has a noticeable dropoff in performance on RedBook while others say it is very good on RedBook. The SA-15s1 does seem to be considered quite good on SACD.