Hi, A dealer is selling a used CRT made by Audio Video Source for $4000. It has 8 inch tubes and he says everything in it has been replaced including the lenses and upgraded to HDTV. The only thing that has not been touched is the guns and they have 8000 hours on them. He is also willing to give a money back guarantee for 90 days if something goes wrong. Can someone please tell me if it would be a good buy or should I buy a new DLP for around the same price. Any help is highly appreciated. Thanks in advance.