I eagerly await some knowledgeable comments, also. This is exactly the path that I am on.
I have heard the F30's and F50's in different rooms with different electronics. Actually, I have heard the F50's twice; once with Proceed, the other time with Mark Levenson. The F30's were good sounding hi-end speakers. The F50's "moved me" each time. My wife, who could care less about what we acquire, even commented on how she had never heard speakers sound like that.
With the used stuff available here, I am going to give the Studios a listen to see if they are worth the step up in cost.