With the XL you get more recording capacity, the glo-remote and THX certification / calibration video. The XL can record up to 150 hours in HD versus 45 on the regular Premiere. The cost difference is justified if you want the extra recording capacity and you don't want to mess around with adding a larger hard drive to the Premiere. Sometimes you can find a refurbished XL on Woot or TiVo's site for less $$$.