My two cents if you mind.... I first learned of DBS w/ an encounter at Tweeter's here in Mass. I took the time to shop around and no one else could compare to the attention I got at Tweeter's.
They took the time to explain (3 trips) the features of a SONY/DIRECTV system and sold me. I have been a SONY fanatic since. My origional purchase was a dual LNB rec'r. I have returned for a dual LNB w/ RF. My next purchase is for the dual LNB, RF, DC-3 model. Shop, shop, shop on the internet if you are a first time buyer. They're practically giving away the systems now and I have about a grand invested in my two receivers. It even comes down to on-screen guide preference and webtv availability!