You might try looking at bar sinks. I was considering one at one point and there are some very nice ones. I was especially attracted to the fact that you could get a removable drain stopper...a perfect solution to hair down the drain.

It may be too "modern" looking for you, but the Kohler Ladena sink bowl is about 7" to 7.5" deep. And since it's an undermount sink, the depth is increased by the thickness of your vanity top, so you get a finished depth of more than 8".

-- Eric

Mirabelle self-rimming lavatory. 8-7/8 in deep!

The Mirabelle sink is in their Key West Collection. We saw it at a bath showroom and plan to use it when we build next year.