I've thought about this a lot lately. Here are the top 5 I would not part with and currently own.
#1. Metallica Pro
#2. Funhouse
#3. BSD Dracula
#4. FishTails ( I have a 9.9 out of 10)
#5. Scared Stiff
I'd like to own - Circus Voltaire and that would make 6. I'd have a real time parting with Bride Of Pinbot as well. 10 Games sounds more reasonable.