I echo your sentiment. The SS is a fantastic platform and is available in many flavors to suite ones needs. I had a MR918L and while I have always had the same 'pinky dangling' issues as you, I found that adding the included magwell resolved this. It also helped with my issues of getting my pinky pinched during reloads.
I regret not being able to find an MR920 Elite during this past few months. And while it is a fantastic platform, I certainly won't be forking out the 2gs that are being asked for them on the EE.