I have a CAS model (120cm) since 1991 on the roof. To date, outstanding ease and reliability. Conversion to Digital ages ago made by ug principle. Although no longer looks quite new and beautiful out but as long as that goes, it's all right with me.
In order to save cost but I recommend to the CAS models:
LNB adapter to a standard 40mm LNB and then a university ALPS Quad or quatto (as desired) on it. Is much cheaper than the Kathrein-LNBs and not worse. If someone wants to use a multi-switch in the attic, which should not look at the money and a SPAUN (Example: SMS 5808 or SMS 51208) Here grow. So you have a Unbreakable satellite system.
Especially in this extreme winter my mirror was completely snowed and iced. Image problems? Nope. Not even a deterioration in reception performance.