Well is there something in Pro Tools Reaper doesn't handle properly or doesn't have? What I mean by that is don't fix it if it isn't broken, why you want to make the switch? Personally I really like Reaper, I switched from Cubase, literally the only thing I miss is the drum editor, though I can manage with the Reaper one now, otherwise my workflow has become much more faster and efficient. Also everything on Reaper is pretty much customizable, if you don't like it you can change it with just a little effort, that is the one reason why I really prefer it now.