Hi, I was in a similar situation to you. My viewty screen stopped working properly and I was on the look out for another phone that would be as good. I heard about the viewty smart and was thinking about getting it, until I saw and read about the poor camera quality in low level lighting. Then I heard about the Samsung i8910HD, with an 8 megapixel camera, and can record video in 720p (smoothly at 24fps IIRC). It's a beautiful device, and it's had lots of great reviews, there's even a massive thread on it on this very forum (check the samsung section). I was going to get this phone next week (when my contract expired), until I read about the HTC HD2, and that blows everything else out of the water (in my opinion).
In my opinion, I recommend that you read up on the Samsung i8910HD, as I think it will tick all the boxes for you.
On a side note, I love my Viewty so much, that I'm going to fork out £50 to get it fixed even though it's about two years old