I can't comment on the Rowland or Sim but I suggest you also consider the c-j CA200. It's a nice integrated with a sound I'd describe as sweet.
There are several good reviews online that you can google. It's also a current TAS Editor's Choice, Stereophile hasn't reviewed it.
There are several good reviews online that you can google. It's also a current TAS Editor's Choice, Stereophile hasn't reviewed it.