IMO the Sherbourn 5/1500A followed closely by the Rotel RMB-1095, then the B&K 7250. I haven't heard the Outlaw, so I can't comment on it.
The Sherbourn and Rotel are both very good, but have each has a different sound. It is personal preference as to which is better. FWIW, I didn't spend a lot of time listening to the 7250 and I never had it in my system.