I picked up a Harmony 880 (color LCD with recharging base) and can't say enough good about it.
After having had a number of Philips Pronto remotes (all programmed with some success) and never having been able to get them programed to the level that I was satisified with, I decided to try a Harmony remote based soley on the advice of a friend.
In less than two hours of removing the remote from the packaging, I had it fully programmed to the point that I could hand it over to my non-technical wife, who easily turned on the DVD player, TV and receiver with the press of a single button!
That's right, the macros are all built in. All you have to do is select your components, set up your activities, flash the remote and do some minor tweaking!
The best part about this is that after using the remote control only once, both my "practical" wife and my "stodgy", "frugal" and "overly practical" mother in law approve of the purchase. Yeah, the woman who told me that a table saw wasn't "needed" (who now often asks me to cut things for her) saw this as a worthwhile purchase.
The thing is so nice, I've got approval to purchase a second one for the primary Home Theater, once the basement is finished.
…another cool thing, is that my three year old daughter can pause and "un-pause" any DVD that she's watching and, depending on the mode, the pause button will operate the DVR so she can pause cartoons!
I don't know about the other models other than my friend, who has the 688 (which runs through batteries fairly fast). This is the main reason I've chosen the 880 with lithium ion batteries and a charging base.
Regards,
Jeff