I do not have the T753 but do have the T773 that I picked up at a pawn shop and it has performed flawlessly. This is the best sounding A/V receiver I have ever heard. Very detailed with plenty of punch. I can't speak personally about any reliability issues but one thing to point out is a slight hiss/hum that was an issue with some of the earlier runs of the T7*3 models and the T163 pre/pro. My T773 does have this issue but to me it is not an issue. The only time I hear it is between songs and quiet scenes in movies. Unless you have very sensitive speakers like my Klipsch, you may not hear it all from your listening position.
Bill
Bill