Got! My school uses Panasonic wireless projector. I forgot where i put the name card. If possible, try searching for the company "AV Media" or "AV Science". They carry the products and installations too.
Thanks for the recommendation. I'm more or less set on the PT-AX100 which is the new model replacing the AE900
The trouble with the list of distributors is that I don't know which one carries projectors and whether demos are available. I don't think I want to call each of them to find out, hoping to rely on the experience of users who might have set up their home theatres recently.