tounra:I vote for the Rega.
To me Cambridge Audio (amps and Cd player) always came across as a bit bright and analytical, even 'cold'.
The Rega is more more fluid, 'musical' if you like, it adds some drive to the material (and PRaT, as some will argue) though lacks the soundstage of the Cambridge I guess.
Why did you choose between these two amps?
There are other contenders from brands like NAD, Rotel and Marantz.
I just read the reviews of both amps on this site...ahum...a complete contradiction to what I perceived with these amps.
Listen for yourself I guess, don't trust other peoples opinions, mine could be completely wrong for that matter.
🙂