Summary: For a portable projector, the BenQ Joybee GP2 is an excellent package. We liked the overall performance, the USB port for direct media playback and the additional dock for an iPhone or iPod Touch. The fact that you can use it off battery power means it is truly a portable projector. Well, you do play a bit extra for the portability bit, but then again, we think it is worth a consideration.
Pros: Good video reproduction quality, HD content looks brilliant, Plays most media formats off a USB / SD card, iOS device dock is a value add for some users, On-screen UI that works, Surprisingly punchy speakers
Cons: Lack of crispness with SD content, Black levels are not very deep, Shift to mini HDMI is weird, Heats up quickly
Conclusion: Overall, BenQ’s JoyBee GP2 is the classic jack-of-all-trades but master of none. If you can live with trading picture quality for portability, it may be the perfect addition to your travel bag.
Pros: Small and light; iPod/Phone dock; WXGA (1280 x 800) native resolution
Cons: Not bright enough for large meeting rooms; mediocre picture when watching movies; battery pack halves brightness
Excerpt: BenQ’s Joybee GP2 is an all-round enhancement of the Joybee GP1 that debuted in 2009, with improvements to brightness, contrast and resolution while also introducing a portable battery pack that can provide up to three hours of power. See also: Group test: what's the best projector?