Best I've ever done was 324.5 for 2 reps, flat bench, with 475 on the deadlifts. I was 195 lbs and 16-18% body fat at that time, I was very pleased with this being with a tendency to be really skinny-fat and a natural lifter (though I do play with a lot of non PH supps nowadays and that line's getting blurry...)
But: I took a very nice rotator injury and rear delt tear right after that, probably set up by that personal best and have not since got past 275, nor have I really tried - it's all about slow, controlled movements now. And I have not taken an injury since.
I think going for maximum power is a great way to find out that you have muscle imbalances because you're likely to get a tear.