Sanyo's latest tow portable video projectors would be the LP-XM150 and LP-XM100 models that are able to offer 6,000 and 5,000 lumens brightness, respectively, although they do share similar specifications including a resolution count of 1,024 x 768, a 7W Mono speaker, Ethernet and HDMI connectivity and a 1000:1 contrast ratio.
No idea on pricing though, but the 9.7kg that each projector weighs would certainly help you bulk up if you're the designated projector carrier for each class at...