I’ve owned 2 MC302s. One was in my home theater, the other in my 2 channel rig. I was underwhelmed with its performance in my 2 channel set up and eventually sold it for a 452. I currently have a 312 in my 2 channel set up. Personally (JMHO), I think 312 sounds MUCH better than the 302 or even the 452. I know these is much debate on the whole balanced vs push/pull thing. The 312 is an EXCELLENT amp. Sell your 302 and don’t look back.
Btw, not sure how the 462 sounds vs. the 302 or a used 452.