I've sold both the Audio Physic and Thiel line in the past. I would call neither the Virgo's nor the 2.3's(current drivers) bright at all! Yes they're on the edge of refinement(as are all more accurate high end speakers IMO), and could sound either bright or "rolled-off" depending on assiciated equipment. Perhaps the older Thiel offerings had some mid/upper trebble accentuation characteristics(possibly dealt with with tubes for best results...as it's all balance anyway). But The Thiels are certainly very refined sounding monitors to my ears with the right gear. The Virgo's are also excellent speakers, within reason with most music/audio sources.
I can't speak for the Siverline's, but you might just "try" something and find out! Like anything else, you'll have to try it with your gear, in your system, with your room, to your ears to find out!
I owned the 2.3's for some time, and they were very good with more powerful hi-end amps(the 200w/ch aragon should do fine with them for now). I also like "jazzdudes" suggestion about a tube preamp up front! This balances things well and ads some "tube magic"! Also, I think the 2.3's are a better choice for larger dynamic stuff, like Rock or HT. Good luck
I can't speak for the Siverline's, but you might just "try" something and find out! Like anything else, you'll have to try it with your gear, in your system, with your room, to your ears to find out!
I owned the 2.3's for some time, and they were very good with more powerful hi-end amps(the 200w/ch aragon should do fine with them for now). I also like "jazzdudes" suggestion about a tube preamp up front! This balances things well and ads some "tube magic"! Also, I think the 2.3's are a better choice for larger dynamic stuff, like Rock or HT. Good luck