When I bought a Goldmund Mimesis 29 for $13,000 new, from my dealer, I could only justify the expenditure because I convinced myself, after weeks of mulling and listening and trying to foresee the future, that it would be the last amp I'd ever own. Within 2 years, I sold it (for less than half price, of course--but at least I sold it). It did NOT work with the Genesis 500 speakers I ended up getting after I bought the amp, and I still don't know the reason why, just not a good match. My dealer urged me to sell the Genesis's (Geneses?) and keep the Goldmund, and probably I would have taken less of a financial loss had I done that, but I really loved the speakers and felt the Goldmund, my "amp for life," had let me down. So I sold it, got an ARC VT100 MkIII for $4500, and have never heard better sound out of my Genesis speakers. But I now don't think in terms of an amp for life. Too many things change. I have found that speakers (and also tuners, I've had a Meridian 204 for 15 yrs) are the one component I end up loving and living with for a LONG time. Everything else is subject to change.