Well, I have my Roamio now.
With the Premiere, I needed a signal booster in the line for my local Fox station to work. After setting up the Roamio, I disconnected the booster and Fox still comes in fine.
I still need the booster for a couple other distant channels though.
"Proud Cord Cutter"
Roamio/Stream (Sep '13 - Present)
Premiere "B" (July '12 - Oct '13)
Premiere "A" (August '11 - Present)
TiVo HD (July '07 - July '12)
TiVo S1 (August '01 - July '07)