The Alistair Sim version in my opinion is probably the best version ever made. The only other one that I think is comparable is the Patrick Stewart version. Of course the Dickens' story itself is so good that it's been re-made many many times, not only in its original form but in numerous modern versions as well such as A Diva's Christmas Carol; Scrooged; It's Christmas, Carol, etc.
I've always been a Dickens fan so maybe I'm biased when it comes to the movie. I've seen Scrooged (that's the Bill Murray one, right?) but not the others you mention.
I still remember seeing the old b&w when I was a kid and being spooked out by the ghosts, lol.