After looking at all the possibilities, I don't think that in terms of aesthetics, anything comese close to the max-11 upper. It really looks as though it, and not the standard upper, was designed to fit the lower. Everything else I've seen (e.g. Stoneycreek's suomi and side cocking uppers, monster fake suppressors, Thompson replica kits, etc.) just look like a jumble of thrown together spare parts. I've got the max-11, so I am a little biased, but I've gone through a dozen configurations on one of my m11s and, solely in terms of looks, I dont think anything can beat the max-11.