Hunter I have been able to get screw on sprockets off before. Its not that hard to be honest. And with splined you have more risk of the sprocket coming loose and you also risk cross threading the lockring too. I think I remember mcinnes stripped the threads on his one and ended up having to super glue it back on just to get back out riding again! Screw on Id say is safer and you get more hubs to choose from at the moment with them.