There are lots of great amps on the market. Review that are positive are good… but after that it is the character they talk about… detailed, fleshed out… The Absolute Sound, Strereophile and HiFi+ are really good a about describing the sound in generally accepted terminology that characterizes it… so you can figure out if it fits your preference. The trick is auditioning equipment they review… if you are calibrated to the nomenclature… then you know what equipment you will like.
I would buy an Audio Research VSI75 long before I would consider many others. The reviews and listening have shown me this brand shares my values in sound.
Pass, Rogue, Audio Research, McIntosh, Boulder are all very different. You need to find the company that speakers to your emotional center. Worth some auditioning.