Can't say I know of a 50-60 deep aluminum rim... but in 2012 or 2013 I bought a pair of Roval Rapide AL35 wheels and just plain loved them. Not the lightest but I loved the stability and perceived aero benefits as well as some of the best hubs around. I took these off my road bike and let them stew for a few years before calling them back into service when I built my son's gravel bike. They found their forever home. They ride beautifully and look quite good. They're also pretty stout. After quite a few thousand miles, however, they haven't lost any weight.