The HD70 was my first projector and still works flawlessly today, but I decided to replace it with a Benq W1100 about a year ago. I paid less than $1,000 for the HD70, so I decided to stay in the $1,000 range for the next one. It was either the Mit HC4000 or the W1100. I chose the W1100 because it was $200 cheaper. I have put in almost 2000hrs on this projector in just a year.
I love my W1100 and would recommend it for casual tv/movie watching when a lot of brightness is needed. Look at other DLP projectors also. They are more similar than they are different. You want to look for one with 1.5x zoom, and a good warranty and support.