This is out of the budget you requested, but I just had to give it a shout out. I absolutely LOVE mine. Everything tightens down so there is absolutely no bounce, and the water bladder is made of a softer plastic material so that it's easier to get all of the air out of it to minimize/eliminate sloshing.

It would absolutely fit a harness and shoes. I live in the mountains, so mine regularly carries my phone, bearspray, GLIDE lube, full water, some snacks, and an outerlayer. It's so worth the splurge if you can afford it.

it's on amazon for the same price.