I bought an Optoma HD33 early this year and feel it is an excellent projector, especially considering the price.
I wish the glasses had been included, but when I bought it the retailer included one and I bought a second pair.
I would say this on the glasses - they are fragile. I haven't broken them, but they feel very delicate, especially around the hinges. The glasses are a bit heavy due to the battery/electronics, and need to be handled with care. I am very cautious to let my kids use the 3D because of this, which was one of the reasons I bought the projector.
The RF feature is very nice, it syncs automatically and never loses sync. I charge the glasses off the USB port on my Directv receiver, they included a USB cable but did not include a charger that connects to the power port.
I agree with Stuart, for the money it is an excellent 1080p projector, and the 3D is just a bonus at that price.