I received one just yesterday from Comcast. I was expecting the Motorola model, because that is the only DVR that Comcast refers to in their published and online material.
I initially had some issues with install due to a cheap VCR/DVD player combo that doesn't have all the jacks I need, so the setup is less than ideal...but I can't blame Comcast or Pace for that. Regardless, setup wasn't too involved...but I wouldn't recommend self-install for those not technically adept.
Having used and experienced how intuitive the TiVo interface is, as well as being an avid Macintosh user and former broadcast engineer, I'm very disappointed in the interface. It looks like the result of engineering designing an interface with some marketing dept. input, instead of working with professional interface and usability developers/designers. Ugh!
Also there are some bugs in the interface that cause it to get "stuck" in certain spots while navigating...exiting and retracing your steps seems to solve it.
The series record feature works sometimes, but all too often it records repeats and episodes in syndication, even if you set it to record only "new" shows. For example, if I were to set it up to record "The Daily Show with Jon Steward," it will record it at 11pm, 12am, and a number of other times throughout the next day that Comedy Central repeats the show. If I set it up to record "Law & Order" it schedules not only the showing on NBC, but also USA Network, A&E and anywhere else that "Law & Order" is shown.
This is probably due to a combination of the series scheduling engine not being smart enough and the TV schedule data not being complete and thorough enough.
The hard drive size is too small for my tastes (especially when you consider all the duplicate shows it can record as mentioned above). They could have used a more effecient codec than MP2 (such as MP4, DiVX, H.264) but for the price/performance point, I'm not sure they could achieve that.
My last complaint...certainly minor...is the size of the Vegas box. Based on the components and requirements, it could easily be half the width it currently is.
But...for the monthly service cost of about $6, it's a good deal.
USB is 1.1, but marked "future use" as is the ethernet port. There is an eSATA connector on the back of the box, but I don't have an ESATA drive to test it with.