- The Psion 5mx is actually approximately the same size as a 6000 ... before the Cxx0 line came out I was looking to get a 6000, and I made a cardboard mockup based on the dimensions to see how well it fit in my butt bag (fanny pack, belt pouch, whatever). Any PDA I buy has a certain volume available in my butt bag along with the phone, wallet, checkbook, etc, etc, and that volume is actually defined by my old Psion 5.
- The SL5000 fit there with room to spare, and so does Hiro, but I'd be more than happy if the PocketPenguin were the size of the Psion. I'd be ecstatic if it also had that keyboard. Hiro has an okay keyboard, but it's too "chiclet-like" for my taste. The Psion 5 series (I have two ... 5 and 5mx, both fully functional) were simply the cat's meow for typing. I bet I could do 30wpm one including typo corrections. I'd send the 5 to Da_Blitz if he'd use it for the form factor.
- I'd not be nearly as happy with this unit if it had a thumb board. They're far too slow to use ... I only have two thumbs, but I could use five fingers (index & middle on each hand, and one thumb) with the Psion 5 series. I rarely get more than four in use on Hiro, and often only three. Hiro's key spacing isn't too bad, but there's just not much real estate there for the keyboard.
- Whatever gets used, it must never fail to register a keypress. When typing quickly on Hiro, keystrokes are often missed even though I know for certain they are all pressed past the "detent", which should ensure they are engaged and registered. That's downright annoying.