I want to Upgrade my D12 receiver in my 4th room to HD so I can have Whole home DVR in this room now. My questions are I see I can get the H25, which we have one , its nice and small and works great. But I also see solid Signal leases R22's as well, Besides size and the fact that one is DVR and one is not, are there any pros and cons to adding either or to my system? This will increase my recording abilitys I imagine, but by How much, and can this pick up all the HD channels Still? I do Have a Swim 16 system, so would I have to do anything else?