I can say from experience that absolutely the Droid Incredible is still a very viable device. I got 1st DInc on launch day and I was coming from years of BlackBerry use. I was (stupidly) swayed by the iPhone 4 and followed the siren's song only to crash into the rocks on AT&T.
Fortunately for me the resale value of iPhone 4's was still very high back in October and I clipped more than enough to buy out my contract and buy a new Android phone.
Now this is where it got fun (not really) I actually found myself questioning what device to get. Should I get the new hotness Fascinate, the very nice Droid X, wait for the new Droid2 Global (or Droid Pro) or get the older Droid DInc.
Well how about all of the above. Yes I tried every phone on that list (except for the Droid Pro, not my style). You may be wondering how I managed to go from a Fascinate to a Droid X, to a Droid 2 Global, back to a Droid X, to yes finally realize that the Droid Incredible is what I truly found to be my device.
First the Fascinate, Samsung has a terrible history of supporting OS updates and while the device was hot, it was outdated out of the box, sluggish and I wasn't going to live with it. I exchanged it for the Droid X, great phone, but the feel and crappy Moto Blur left a bad feeling (along with Moto's refusal to play nice with the hacking community) so then the new Droid 2 Global comes out. I heard great things, about the keyboard, I liked it good size, very zippy, still the crappy moto blur, but the biggest issue was the smallish size and the keyboard (big hands). So all of that was done at Best Buy, great 30 day window to return unlike Verizon's one time and that's it.
So I opted to buy to get the DX again after the Droid 2 Global and figured I would live with Moto Blur until the hackers got rid of it, had some fun tweaking and putting new ROM's and all around playing with the device. Still I felt it was just not cutting it for me.
I was able to work with a very nice VZW Customer Service agent who put the notes in to approve my replacement (even though I had one already at Verizon) and the store of course could not "our system is hard coded for 1 return only", so I called customer service again they helped out, I got the DInc for $149, extd battery and honestly I will be very happy.
So long story short (if you are still reading) the Droid Incredible is still a great phone. Tegra2 Dual Core phones will be out next year but so what, they will save some battery life, but if you get the DInc now you will be 3-6 months closer to getting the LTE capable phones when the next round of devices comes out. Plus you can just get a 1 year contract and pick up the Tegra2 phones next Christmas.