Two Arcam P35 amps for $500 so far so good.

What are people's experiences with the Arcam.  Anything I should expect or better matches with certain speakers?  I got them for a nice price, running the first one now and wired to KEF R100s using a Rotel 1066 for the moment just to warm them up, but looking for a new pre.  i also have an old Parasound PR200 I will try. But speakers are next I think, but they will likely be new.