What I know so far is after shipping ($$$$) they are all within shootin' distance of each other in price. The GeoSatpro 1.2 Meter KU OFFSET Dish looks like the best deal. The unanswerable question now is how much gain is there likely to be going from a Q-sat 36" to the 1.2 Meter dish? AMC 21 represents most of our viewing but 12140 has become a rare treat of late. It has never been completely dependable. 12180 is still dependable but has weakened so I assume it is the jury-rigged dish arrangement. (I have watched for reports of lost or reduced signals but have not seen any.) So would anyone venture an opinion on whether there is sufficient potential gain to spend more money?