I hate to unrinate on the Vegas parade, but I looked at the new features of Vegas 5, downloaded the demo and, subsequently, deleted the demo. I will not be upgrading. There is nothing here worth $199.00 to me - and I hate the new Toys-R-Us interface.
Unlike Version 3 to Version 4, this is not a major upgrade. It should have been called Vegas 4.5. The addition of compositing features for some might be a big deal, but for an After Effects/Commotion user, it ain't no big thang. I would have preferred solid improvements as an NLE (EDL and media management), not additional features that, in my opinion, should be done in other, dedicated applications.
DVDA 2 might be worth it, but I haven't looked at it yet. So far DVDA 1 does what I need it to.
A missed opportunity that proves Sony wasn't listening.