I have been listening to Geezer Butler on the latest Black Sabbath and have to say his tone and style are killer (in a good way!) I agree about Entwistle, Squire but also Greg Lake, John Myun, Mike Rutherford, Percy Jones, John Wetton, Paul McCartney, Jack Bruce, Dee Murray and of course, let's not forget the great John Paul Jones.
Best rock bass player
Today is the 11th anniversary of John Entwistle's death. I had the pleasure of seeing him play live a few times and was always impressed by his musicality and ability to keep up with Keith Moon- much less lay a foundation for Pete Townshend. I also have always enjoyed Chris Squire, Stanley Clarke, and Flea for similar reasons. Who are some of your favorites?