f/2.8 is too dark for most indoor events unless you're on a D700, or you have great lighting.
At work I use the D700 w/ 70-200 2.8 VR; company events, many outside and with the indoor stuff being fairly well lit, along with brochures and PR productions. I do plan to get a D700 in a few months. The D7000 will be my second body and I want to start doing freelance gigs immediately. I already do some shooting for the Symphony Orchestra and local theater groups.
I like what folks say about the 80-200 f/2.8, but don't know how much I'd miss VR. I had a 135mm f/2 DC a while back, but did not like it on a DX and sent it back to Adorama. I am thinking about the 105 f/2 DC. I do have a cap on how much I can spend, which all depends on my annual bonus. I should have 7K-10K to spend, total. The D7000 is a basically a freebie with my trade-ins to Adorama.
I had considered the 70-200 VR a must-have, but if the 80-200 would do I could get the 105 f/2 DC for the same money. I have never used a mid-range zoom much and have almost no experience with wide-angle zooms and primes. I looked at the 17-55, but want to keep all my lenses usable on FX as well as DX. The 17-35 seems like a poor range for DX. Don't really know what to do here.
I am liking the idea of fast primes, and getting the pro zooms later.
JR