Hmm, not familiar with those specifically, but I can point you to some places that might help:
www.projectorcentral.com -- they have a great set of calculators to determine throw, screen size, and brightness for different projector configurations.
www.audioholics.com -- they sometimes have good reviews of projectors (if they did your specific one). They usually have very technical reviews to sort the wheat from the chaff.
Good luck.