I've tried MR a couple of times and can't make it work. Fit isn't good for me, which is the biggest issue, but their bags also lack intelligent design and are frustratingly "strappy" in use. I also hated Kuiu the first time I tried them, but the newer stuff works well from a fit perspective and the bags are very usable. Ultimately you can get used to any bag, so focus on finding the best fit.