I just had my two HR10-250's replaced with two HR23-700 units and a Slimline dish was installed. It has 3 LNB's and the dish is 22" X 32". In the setup menu for the satellite there are quite a few choices for Slimline 3 dishes. Which selection should I make for a Slimline 3 dish? Also, what is the difference between the 3 LNB and the 5 LNB dish other than two more LNB's? What's the advantage, if any? Should I have insisted on getting a 5 LNB dish? Thanx.