I have built lumenlab projectors for some time now and they are very fun, but deffinently cant compete with a decent commercial projector, and they are beasts. I have built 1080P versions as well as 720P, and the 1080P version is extremely sharp, no SDE, but contrast and blacks are terrible, and brightness is terrible. Only good for a pitch dark room and a fun project. Now that you can get some 1080P projectors used for almost 1000$, its not worth doing. Theres not one commercial projector that ive owned that did not beat a DIY projector by a mile.