I'm thinking about jumping ship on DirecTV and going with Comcast; mostly because DirecTV wants to charge me $99 to upgrade my SD-DVR to an HD-DVR...plus, I'd have to pay an equipment leasing fee of $5/month. This inspite of the fact that I've been w/them for seven years and have purchased expensive packages like "NFL Sunday Ticket." Comcast, on the other hand, is waiving their HD-DVR leasing fee for one year, in addition to throwing in one free premium suite (HBO, etc) at a total cost of $51/month (Digital Preferred package). My question is: How does the Comcast HD-DVR unit compare to the DirecTV HR20/21/22 series units? Personally, I haven't been impressed with DirecTV's offerings (the non-TiVo ones); slow, buggy, etc. In that vein, I can't imagine the Comcast unit to be any worse...but hey, the world is full of surprises. Any commentary on any of this (HD packaging, HD-DVR receivers) is really welcomed. NOTE: I've posted something similar over on AVS Forums, but that's an even more unwieldy forum than this. Thanks for any help!