in we business consultancy firm with 15 professional , do presentation be 60 % of we activity . this be we 8th Epson Projector and we love they . in fact we just buy another ex5210 as a backup . Easy to install , it accept any type\/brand of laptop graphic . most of we client react with a ` wow ' when they see the quality and sharpness of the project data\/colors . important reason for choose this projector be the low noise . this machine be a consultant best friend .