FYI PDF files on a PDA usually suck - the views available are terrible for reading on the move when there is a lot of data to plough through. A text or html file would be better.
Surely with a little bit of thought GC.com can come up with an html output for the pocket queries?
Anyway, apart from that I tried somebody's suggestion for the pocket pc, GPXview. It seems to work pretty well actually, so maybe people with ppc's should give that a go and then see if they need to complain further.
On the up side, I can uninstall Mobipocket from my ppc now. I only ever used it for this and frankly it wasn't great!
I'll have another look at cachemate, but I didn't like it the first time I looked. GPXSonar seemed pretty buggy, but I suppose I'll have a look at that too.
For the actual navigation if you're using your ppc as a gpsr (I use an ipaq hw6915) I like Navio (http://www.tinystocks.com). It doesn't show much in the way of info, but it will run as a today plugin, and has a nice large compass and plenty of sat info. If you can work out how to get the scale right it will take a gif and use it as a map, which is nice (but I confess I haven't bothered working out the scaling!)
I wasn't too pleased initially to see the back of the book, but you know what, the more I look at the other tools available to work with, the less I see the need for it. That said, I still think the html output from the PQs could be useful for people, and would be pretty universal....