I love my Tour. Switched from an Omnia and have to say this is probably the best phone I've ever had. The battery door is a lil loose but that isnt enough to stop me from keeping it.
if you're happy with your curve (isn't broke or needs replacement asap) AND you're up for your NE2, I'd say wait a few months and let some of the kinks work out.
maybe there might be another discount in the fall or maybe a major update fix?
The only Kinks my tour has is all of the Kinky girls that want to get there hand on it!