As well as my Psion(s) I also own a HP Jornada 568 which while not being a very productive tool, is a lovely little gizmo.
I mainly use it these days for reading from, using the excellent uBook software from http://www.gowerpoint.com/ which reads rich text, text, html, supports bookmarks, a built in dictionary, and has many other features. A wonderful piece of software.
Apart from that I use TomTom's CityMaps software which again is full of features and well known as possibly the best route planning software and GPS software in the business.
Apart from this I play a number of excellent looking and great to play games on it. I would like to recommend the only site I use for PPC software the Freeware PPC website.
More recently I've had an O2 XDA Mini S. It's basically a Windows Mobile 2005 Smartphone. Now again, hardly productive when compared to a Psion if you ask me but still nice. For example, they play videos and music excellently and for going online (via WAP, GPRS or WiFi), well, you can't beat Microsoft themselves for a good MSN client. The phone itself isn't integrated very well, requiring a stlyus to dial a number but for browsing websites, MSN'ing, texting and watching a video, well, just great. The MSN and text is helped by a lovely keyboard that's revealed when you slide the unit apart.
My problems with Windows Mobile still remain though, and I found myself resetting the unit more than twice a week, it's as stable as Windows ME (sorry, couldn't resist). It is however powerful, a very powerful mobile operating system. In my opinion though you can't beat Symbian now. I've moved to a Nokia N95 and while I lose my keyboard and touchscreen (hated that anyway) you do get a nice stable OS that still has WiFi (3G too!) and plays videos and MSNs.
Sorry Windows Mobile, but until you're more stable, a fair bit faster, and your built in software is a bit nicer, I think I'll stick with what Symbian started on the Psions and have continued to produce on the Nokia phones. Still you're good for reading books and playing games :)
Note: The O2 XDAs are rebranded and all major mobile service providers have their own version of this range.
