Hello TattyMatty, I haven't tried the CS325 but did try the CS425 against the Denon DM37 and thought (and bought) that the Onkyo was clearly better.
Only around 3 months old and perfect but have since bought Cyrus so if you're interested then let me know.
(Yes I know it's a bad first post and also convenient but it's just the way it's happened and the comments on sound are genuine)