Ok I have an 80 HR single tuner tivo on a lifetime subscription. I'm thinking of getting a second 80 Hr dual tuner. Best buy has them for $250 with a $50 MIR and a $150 Tivo MIR. I have already read from tivo the policy on the MSD and since I wouldnt be buying the unit from tivo.com it should be eligible for the MSD. What I am wondering, is will going for the MSD disqualify me from the $150 MIR from tivo?