Yes, I have several original pressings, one of which I haven't battered too much over the years, and it does sound wonderful. The 40th anniversary sounds very close to that to me on my system, and is a great pressing. I wouldn't hesitate to try the Mobile Fidelity though if I did not have several wonderful lp sets to listen to already.
I'm a bit fanatical about this recording because it was an eye- and ear-opening one for me at the beginning of the 'seventies and has remained an important part of my listening world. I have a handful of cd versions, and both the Sony SACD releases (they seem pretty identical, one is a hybrid, one is not). They are the remix, as is the Blu-Spec 2 cd version I've recently picked up that sounds phenomenal. I have one Sony cd set that is the original mix, as is the copy in the Complete Album Collection. The one I listen to the least is the Complete Bitches Brew Sessions box set. And I have the first US cd version which actually sounds listenable if you reverse the polarity, believe it or not.
I'm sure the Mobile Fidelity SACD will sound very good, and I want the original mix on SACD. Their previous Miles Davis SACDs have sounded excellent.
I love this music!