Our Psion 3 and 5 machines (we tested this to the full) last for +60 hours (on one set of batteries). This is great for those long train and plane trips. And we can change the type AA batteries ourselves, so we don't have to take chargers and docking stations with us. And what about the software? Well, our Psion machines are exact replicas of our Palm counterparts. We installed the same software (not the same programs, but software that does exactly the same thing), such as conversion programs, a subway program, maps, a couple of utilities, a biorhythm program, ... and a couple of games (there are thousands of applications available for the Psion series).
The word processor and spreadsheet programs (which are built in) are converted to our desktop PC in a snap! Yes, we're quite enthusiastic about all this. And yes I know, we can't watch a DVD movie on our Psions, and we can't edit video footage with them or play MP3's. But hey, they're small, light, and keep running for hours and hours and hours on one set of batteries. And if we want to connect to the net we use our desktop machines or we visit an Internet shop in the city that we visit. So no problems on that front either. Since Psion freeware and shareware becomes so much harder to find these days, I put up a page with a great Psion software CD here