As offensive as this may sound to many tube lovers out there I find the sound of well designed solid state to be categorically better than virtually any tube amp unless your system is seriously flawed and requires tube coloring to disguise such flaws. In my experience most tube amps break-up when forced to reproduce complex passages of either classical, rock or jazz (i.e. large dynamic peaks, many instruments overimposed, etc.). The only exception are the "over-engineered" megabuck tube amps with which I have little experience but which in any event do not seem to overperform well designed solid state gear. Although tube coloring via excessive mid-bass and rolled highs is in many cases a tempting cure for poor recordings or poorly designed systems I believe there is solid state equipment out there which vastly outperforms these intricate system/tube pairings. If you want names I suggest you look at Plinius, Krell, Levinson, Rowland, as well as some less pricey stuff from such as Marsh, GamuT and Sunfire.Of course the rest of the system needs to be up to par.