The Darbee remotes absolutely suck. I have two that don't work more than they do work. I've tried new batteries, switching the remotes between the two Darbees, holding the remotes from right on the Darbee to a few feet back. Mostly, the remotes DO NOT WORK.
So, it is a set it and forget device for me. I also have the occasional reset problem of the Darbee. Frustrating. Darbee said to send the unit back and they'll replace it. But honestly, with what? These things are not bug-free and at least I know what bugs mine have. I'm not gonna start paying shipping fees to discover another unit's issues.
The Darbee makes the picture nicer. For that, it is worth it. The remote is junk and the unit itself, while awesome "picture enhancing" software, is pretty chintzy. It is what it is. For $300-ish you are not buying solid performing hard and software. You are paying for the technology that sharpens your image without introducing unwanted distortion.
I'm not happy about the problems either, but I don't regret the 2 purchases. I am gonna try that "smashing down on the remote buttons for a few seconds" trick though. Thanks.
Lastly, and I don't recall if I mentioned this many posts back, but I recently discovered that I needed glasses for distance and night viewing. I got them and WOW my TVs are all popping crazy High Def once again. lol
Lesson is: Check ALL of your equipment including your eyes. Embarrassing, but funny too. Having glasses I've now discovered that I had my Darbees turned up way too high.