Are there any compelling advantages to the SIC?

Now that folks have had these for some time...

This is a question mainly for those of you who own ---> both <--- AtariMax and SIC carts.

For you English speaking folks, how are the docs for SIC?  Is there enough info for the typical user to make their own images?  Are they even still for sale?  (I noticed that the web page for the Docs seems to be gone.)

-Larry