Yes, I second that since I own one. For the same price for the Photosmart 850, you can't find a better zoom in the market. It's an 8x optical (actual zoom) + 7x digital (digitally cropped). It was worth the money I put out.
If you don't care much about the zoom, than, you have some homeworks to do. All cameras in the same 4MP category, has some different functions depend on what you need and what your pocket can afford.
The HP 850 however, has been a great camera for me. I love the zoom and the size since I have long fingers. It has a good grip and enable me to hold the camera more steady. I also like the large LCD, 2". Photos are very sharp and it is a very simple camera to use.
Wish I know how to post some photos to show you the zoom.