Are you looking for an undermount or top mount sink?

Do the 24" cabinet plus 25" sink. This is about axx-covering, so sign a release absolving the installer of all responsibility for problems arising from having the flange overlap the cabinet or go find one who takes pride in, and relies on being protected by, doing a good job for his clients.

Yes, there could be issues if something went wrong and the counter had to be removed to get the sink out, but, heck, installing a water line to the kitchen is FAR, FAR, FAR, FAR more likely to result in problems, yet plumbers do it everywhere every day. And just how many people have you ever known who had to have the counter removed to get the sink out? As opposed to someone who just posted the other day that her hanging sink fell down? Not that that happens often, either; this IS just a gathering point for people with problems.

BTW, DH and son chiseled out both sides of our 30" sink base AND a bit from the next cabinet over, to fit in a 32+" flange. I wasn't about to give up the possibility of an adjacent 15" drawer stack for more scouring powder room.

See this discussion below.

Here is a link that might be useful: 24 inch sink cabinet

Try this one...If you have FRAMED cabinets, you can always "scoop" the side panels out some....on the cabinets. If frameless, don't scoop.

http://www.mrdirectint.com/2318-single-bowl-stainless-steel-kitchen-sink.html

Here is a link that might be useful: MRDirect

Did you consider the Blanco Precis large bowl? It requires a 24" cabinet.

Here is a link that might be useful: blanco silgranit