Having just finished, I think I would buy the pre-gridded if I were to
do it again. It look me about 1.5 hours to do it. My time is worth much
more than that (I could have been billing clients during that time).
However, that was the first time I had ever even seen a gridded
sectional so I was trying to put it together from reading the CAP
manual. It probably would have been easier if I'd actually seen a
gridded chart before.

-Robert