Looking for alternative to Sonus Fabers

I own a pair of Sonus Faber Concertinos. These are nice little speakers with a beautiful voice, but once in awhile I crave something that sounds a little different. I wish I could be more specific than that, but I'm not exactly sure what I'm looking for. Basically, I'm looking for suggestions on a second set of speakers I could have on hand for my changing moods.

I want to limit the search to monitors or small floor standers in the $500-$1500 USED price range. I'm considering ProAc Response One SCs, Totem Model Ones, Vienna Acoustic Haydns and Bachs. IF anyone has heard these or had the chance to compare them to the SFs, I'd be interested to hear your opinions. Any other suggestions for other models are welcome too.

My system currently consists of a Sim Audio Moon I-5 integrated, Musical Fidelity E60 CD player and NHT SW3P subwoofer. I also have a Bel Canto DAC 1.1 on the way. I mostly listen to female vocals, acoustic guitar and piano, and to a lesser degree classical compositions, Rock and R&B.

Thanks for your help.