Just as the "GoTo" button on the ePVision is the return or back function.
Like I said; "kinda stupid".
For me ease of use is when one can do what they wish once they know the device. Again, as an example conflict recording resolution. On that alone I couldn't live with the CM as it's so lacking. On a daily basis I'm not going to continually dig through the guide/my scheduled recordings looking for repeats that will be recorded over first run shows. Or schedule shows that are repeated on another night (now marked as repeats) but were skipped earlier in the week as I was recording higher priority shows.
The best ease of use is having a device do what you want without you doing a thing... and the most important feature of a DVR is managing what I want to watch. With that in mind ease of use is a no brainer to my eyes. :)
Actually, I found out (for me ) it's more important (after dropping cable/satellite). You have a lot less choices for starters and among many others the pay networks tend to repeat content so you can always record the later broadcast. Last season Monday night was a bear and shows got skipped... some of them TiVo would pick up as a repeat when they were repeated over the weekend.
It's not the guide rather the resolution logic the device uses. One example (sorry, I keep repeating) is a show on Monday night that's new and gets skipped because of higher priority recordings. Well luckily the network repeats the show Saturday night (as a repeat) and even though the device is set to only record new episodes it's smart enough to realize even though it's a repeat it's new for me (since it was skipped) and records it. This allowed me to catch a bunch of the season... sure resolution won't solve the world's problem but some additional shows are better than none... it also helps in not getting a headache trying to figure what to and not record. :)