I have faced the same situation some time back and I went for the Conrad Johnson PV10A at one time and the Audio Research SP9II at another time. I still have both as they have met my expectations and cannot be replaced except with very much more expensive equipment. These preamps have different sound qualities and I interchange them ouce in awhile to enjoy their particular qualities. Then, I also interchange my preamps with a solid state Forte 2 or other preamp, sometime solid state, sometime tube, again for a different but equally satisfying flavor. Isn't this what this hobby if all about? That's why they make vanilla as well as chocolate ice cream.