I currently have a TU-DST51 just south west of Boston. I am using a silver sensor antenna which works great on all channels except WBZ which is our local CBS affiliate. Not coincidentally I don't think, it is also broadcasting at the highest power of the local stations. I do believe Multipath is my curse. A recent home theater mag pronounced the HDS20 as the best at handling multipath. Anyone have any experience with this system in a multipath environment? I don't want to spend another 800 dollars if it will not improve my situation. The directv portion of the system is irrelevant as I don't have line of sight to that part of the sky? OTA is all I care about at the moment? Any info would be much appreciated. Thanks.