If I was still travelling around, city to city presenting as I did a long time ago (50+ plane flights a year), and presenting in front of small groups of 2 - 25 people, then the Dell 3400MP is exactly the kind of projector I would like to have with me. Sure, I'd be tempted to take a 4-5 pound LCD projector instead for extra brightness and more accurate colors (in brightest mode), but, truth is, the Dell 3400MP easily can do a good job in those classic conference and training rooms. It has enough lumen output, and a clean, very sharp image. With over 1500 lumens (my measured unit), it can easily handle audiences of 100+ in rooms with good lighting control, when needed. Sure, a more powerful projector like the more expensive Epson 1710, is tempting, and it does weigh in under 4 pounds, but the difference in physical size is huge, with that smallest of Epson's still being twice the bulk, and over a pound heavier. No contest for the highly mobile road warrior who wants to travel light.