I've the SHL5s and after I heard the 40.1s I wasn't all that tempted to move up; I was relieved, actually, because there's no way I could swing it money-wise. The 40s are to-die-for amazing, in every way, but SHl5s have that same mid magic, maybe it's even more involving (just the mids, mind you -- the 40s can't be touched all else in). I also realized my room is too small for the 40s, and that's certainly part of it. They need lots of air around them.
My room is 12'X26' with 8' ceiling, perfect the Shl5s.
Hope this helps in some small way ..