My experience is in line with the comments so far. I've been very happy with my Spendor SP1/2 loudspeakers, which I run with ample solid state power amplification (McIntosh MC352 stereo amp). They are natural-sounding, non-analytical speakers that are not fatiguing in any way. New, the Spendors are pretty expensive for what they are, but I found a used pair for less than $2K including the essential Sound Anchor stands. The SP1/2 won't handle deep bass, however, and I believe it is essential to get a subwoofer to hear them at their best. My current subwoofer is a single REL Stentor, which has made a huge difference. A lot of Spendor owners use REL subwoofers, sometimes in pairs. Others have reported excellent bass with the Spendor SP100, but I have not auditioned them. Still others have also reported success with Spendor loudspeakers on relatively low power, whereas I find them to perform well with a high current amplifier. I suspect that high-power tube amplification would be a nice match for Spendor. If you are able, do experimentation with amplifiers to see what you like.