2nd behind Rice only becasue I think Rice will have 3-4 more rings and play at high level 10 years longer as he was a true freak and the best ever at any position.
Elroy "Crazy Legs" Hirsch
Lance Allworth
Charlie Joyner
Fred Biletnikoff
Jerry Rice
Art Monk
Lynn Swann
Kellen Winslow
Raymond Berry
Paul Warfield
Don Hutson
There are a lot more but all of the above receivers had better carrers than Randy Moss has had (so far). The NFL was around for a long time before Randy Moss came in to the league.