Jpup - I have watched games from every section except the bleachers. My personal favorite (for non premium seats) are Sec's 420 - 426ish. You are right behind home, so you have a nice view of the entire field (and don't get a distorted read of the ball off a bat). You don't really feel that high or away from the action.
I really hate the lower deck down the lines when they start turning the seats towards home. It really cuts down on the leg room (and being 6'2", that's a biggie for me) and I just feel like I am all twisted in the seat.
Of course, all things considered, I'd take the Diamonds.