Neither boxes are speed daemons and both lag at times (deleting Season passes, grid guide), but it's far faster than theDirecTiVo HD we used for years.

ENGADGET: TiVo HD vs. Series3 HD

The TiVo Live Guide is great, but it isn't perfect, and it's not a complete replacement for the old fashioned grid guide, which is completely omitted from the app.

ENGADGET: App Review: TiVo Premiere for iPad

The channels change faster, although not real fast and the guide is faster, but the typical grid guide is not as fast as we remember it at CES. Plus this list guide grows on you after awhile.

ENGADGET: Review: Series3 TiVo HD