I am a Rubyist that is just starting to dabble in Smalltalk and am trying to chose an implementation to experiment with. It seems like Squeak or Pharo would be a good choice, but I'm having trouble finding current information to help decide which one would be better. Much of what I find via Google searches is from a couple of years ago and may no longer be relevant.
Is there a clear favorite these days? If not, what are the pros and cons of each?