Re: Push/Pull pots for a semi-hollowbody . . .
I like the Dimarzio ones, as they have a much more solid feel to them than the cheap ones. Forum member Kent_S recommended them to me, and I've been very happy with them, I have them in several guitars. The rotation is very nice, not too loose or too stiff, and the switch seems much more durable. Dimarzio has them custom made, unlike other manufacturers who all buy from the same manufacturer and repackage them as their own. Unfortunately, CTS doesn't make DPDT pots, but the Dimarzios are outstanding. They are kind of hard to find though, I had to special order mine from a Dimarzio dealer.
Ryan