I couldn't agree more to the posting of Brianherlihy. After being a long time fan of the music produced by my top of line Spectral setup, it was a quick and easy decision to move over to the Soulution 721/710 combo. It has all the goodies of the finest Spectral amp setup (resolution, speed, 3D, dynamics, neutrality), and adds to that the smoothness, density of color and finesse of the finest tube amps. I've compared my Spectral amps many times with both SS and Tube competition, but never I heard something that gave me more musical satisfaction. but the Soulutions easily surpassed it.
By the way, I still play disks with the Spectral 4000 pro CD player, which is still the best in my experience (albeit, I haven't tried to find for better very hard, it is that musically satisfying).