Wish the RF feature worked on these; It would be fun creating macros that didn't require line of sight for your DVR. Until that gets worked out (if ever) will stick with my NFL remotes; The Bears & the Cards.
the RF does work, it just cannot DIRECTLY control the DTV RX. instead they give you an RF extender which has IR emitters. so you control the extender and it controls the device. i have not setup my extender yet, it is still in teh box. but from what i understand you dump the programming to it just like the remote.
another thing about the harmony series is they have dual IR emitters on the front, so they send a wider beam. this means that you can point the remote in almost any direction and it will work. this is a problem in my house, as i have a 15 month old who liek to bring Daadeeee his remote even when it is sitting next to him. never fails, she changes channels or turns everything off!