So in my long hunt for a silver-faced receiver on CL I've come across two local sellers - one has a MCS 3253 and the other has a Yamaha 620, at $50 and $45 respectively. They're both willing to demo the receivers and have owned them for awhile, in fact I think both are "inherited" from their parents. They both look pretty solid, is there one that is outright preferable in terms of sound, build-quality, and power? This will be my first silver-face receiver, currently using an 80s era Technics SA-929.