Heh the question is not really that clear cut, like a 1 or 0. I would factor into this that:
1) 954 will be around for 2 years (ie. resale will be better in 2 years when you sell, rather than the older 929rr model)
2) Motorcycle Magazine just wrote a whole article about the 954rr being an entirely different beast than the 929. Stiffer, more power, smoother. They emphasized smoother.
3) How much is 2000$ worth to you?
Obviously from my statements, I'd go with the 954rr. I hate buying outdated [censored]. I'll do it when buying cars because I can save a whole assload of money, but with a sportbike, part of the deal is the whole poser factor, too... =0) just my take on the issue.