I'm looking to switch back to DTV from Dish, and will probably get the HR34 because of all the HD tuners. I see that it has PIP... Does the PIP window actually go all of the way against the edge or corner of the HD screen? Or is the placement of the PIP window designed for SD screen, like on Dish 722k HD DVR? Also, any outstanding problems with the HR34 that a returning customer might want to know about? Thanks!