I have have a optoma 719 for about five month . Picture quality be good . it be easy to use . I have not haul it around enough to know how sturdy it be . my only gripe be that the documentation be poor . this device come with a usb port on the back . it do not seem to do anything . there be no informaton on it in the accompanyng documentation or on the website . a e mail to tech support be not answer . I hope that I do not have any big problem with it . for those who might be interested it do work with s Video .