My stock radio is demon possessed - scans on its own, etc. So I'd like to replace it. I'd like to get XM, but I want a clean look. Does anyone have any experience with the Alpine CDA-9820XM? It's the only in-dash XM I can find.

The PO of my 95 E300D had XM - the car still has the antenna. I'm assuming this should be straight forward, but I though I'd check & see if anyone has experience with this unit or any installation advice.