It's a tough call. I am still sitting on the fence on this one. Initial plan was to add a mini to my Roamio pro. But when I called in to cancel my 1 year old XL4 service they offered me lifetime for $99. I jumped on it being it made it more marketable on ebay. Now I am having second thoughts. If I keep the XL4, cable card is free from Comcast, I have backup unit to Roamio if ever needed, extra storage space, plus 4 extra tuners. I figure I could get $300. tops for the XL4 and the mini w/lifetime would cost $238. So close to a wash there.