If you're going to be using it for business I suggest getting something at least over 300 lumens to see text better. Do some research for reviews comparing different pico projectors. Thers all a buncha of different brands out there. Epson, ACER, Optoma, AAXA Technologies, Asus, etc whos been in the game for awhile. AAXA specializes in only picos from what it seems like from their product line.
Heres some sites I check out every once n awhile to get to you started
www . mini-projector-blog . com
www . micro-projector . com
www . mini-projectors . net