I’ve had an airdesk for a little over 6 years, since a friend introduced me to one. I love it – it was in my office in TN and i used it all the time. I put it in the office here and used it when i worked in the office, which is not 100% of the time (like i did in TN). I’m under a deadline and have been working in the living room a lot lately but tired of using the laptop on my lap – for some reason, it was too easy to get distracted with the laptop on my lap (plus my arms were getting sore). So i moved the airdesk to the living room. But now I don’t work in my office at all because i don’t have a laptop desk there… so i ordered one for my office. I also got a mouse shelf and cup shelf. I’m not sure which desk i will use those on yet.
Yes, there are cheaper “solutions” for using laptops on couches… but its highly configurable. It’s easy to adjust – and adjusts in every way imaginable. My laptop DVD was broken twice because i set it on the floor – with the airdesk, I just need to push it out of the way.