Have only been to one Knicks game at Madison Square Garden but I don't recall where I sat but the seats were fairly average if you ask me. This was before the renovations.
We sat in section 222 for an Elton John concerts and had a nice view of the stage, but it was difficult to see the jumbo tron. Elton really puts on a show and all artists seem to love performing at the Garden. This place has a superior sound system to any arena I've ever been in.