Projector Choices

I need to get a projector for the office and I’m having a hack of a time trying to decide on a relatively cost-effective projector that has a 1280 pixel wide resolution (generally 720p).

These two are the current leading contenders:

I have a Sharp for my home projector and I’m quite satisfied with it. Some of what I’ve read makes me think the Sharp is a better machine, however the Optma is smaller (which is important when it’s sitting on a conference table as it will, for a while at least) and has a bunch of good reviews, so I’m not that worried about it either.

Anyone have experience with either model or can see anything important in the specs that I could be overlooking?