The extra videoram is good for some people, I chose the 2.33 over the 2.16 but to tell you the truth they are very similar. Even the old CD MBP was very similar to my 2.33, you won't notice the differences in every day work.
However, the CD heats up like crazy, and the C2D doesn't, which is the best improvement I find.
Anyhow 256 video ram could be useful, the tiny boost is nice and the extra ram is nice too. I guess the 2.16 is better value, but I got mine tax deducted anyway so it was only an extra 250