Ditching the Verizon POS DVR and coming back to Tivo. The Premiere is on sale for 79 and the XL is 299. Is there any significant difference between the two other than disk? It seems I can get a drive on my own for much less than 220. I've looked at the Tivo website and other than the glowing remote I don't see anything else. Am I missing something? Thanks in advance.