I just picked one up the other day.  Have not had a chance to play it yet. 
It is one of those things where I want to pick one up for the convince 
But then I think. Wait. I could knock out another two $100 level games off my expensive list. 
Then don't 
I guess if I were to stumble on one for less then $100 I would get one. 
But as it stands I can already play all these games minus import Genesis games. 
And even then I haven't looked into moving a Genesis to play import games truthfully