I have two premiere's and am considering upgrading to Roamio. I currently use the old style "standard definition" display,menus,etc. because they display faster than the HD versions. channels seem to appear quicker (less time with black screen), guide seems faster, et. IN other words the entire user interface experience seems quicker with the SD settings . Is the old style SD menu option even available on the Roamio, and if it's not are the HD menus, guide, channel changes, etc. quicker on the Roamio than the HD menus on a premiere?