I've considered the OQO in the past, it has pretty much exactly the feature-set I'd like, but the main problem I have with it is that it's really too large to fit in a pocket (well at least my pockets, it's rather thick...), and I've got a feeling it runs rather hot. Other issue is battery life is not too good compared to the N810, only 3.5 hours according to their specs, and though the battery is user-removable it's really too bulky for it to be practical to carry around spares all the time. Well maybe if you had a bag, but I like the tiny BP-4L batteries, I can always have at least 2 or 3 spares with me in my pocket.

Other than that though the feature-set is king for the size of device, too bad it also comes with a king-sized price, $1,600 to $2,500 depending on options, at least where I've seen it. Too much for CyberCat I'm afraid...