Well I have had a play with the O/S system and to be honest. I don't think the C64 is powerful enough to run the software. I found it very sluggish and not very interesting. The O/S should have come on a Cart of some sort. This would allow more memory. Plus a EPROM type of chip so the memory of the C64 is not being hammered to much. So for me the O/S is not worth buying. What are your comments on the O/S for the C64.