Parasound Halo A21 or Rotel RB-1090?

Hi,
I am looking for a power amp for a secondary system that I am setting up in my basement.
I have decided on two amps, either the Parasound Halo A21 or the Rotel RB-1090.
I know the 1090 has more power, but I am looking for the best overall sound between the two.
Has anyone ever owned both of these amps or compared them?
If so, what are the differences in their sound?
Which is overall superior sound-wise?
Please give me a detailed description of the differences between the two.
Thanks guys.
Angela