You wouldn't have thought it was that difficult but it seems to be getting *more* difficult rather than less difficult nowadays.

Currently my wife has a Palm Treo 6800 which she synchronises with Evolution. This works reasonably well but does have its problems:-

Evolution's calendar is somewhat arcane, has anyone really worked out how those menus in the sidebar are meant to work?

It's far from perfect at keeping things 'clean', i.e. we have a problem with duplicate appointments appearing and it's a real pig to get them cleared out. It took me half a day yesterday to sort it out (if I have). This is one of the reasons for this posting.

The Treo 6800 is getting a bit long in the tooth and needs replacing soon, since there are no new PalmOS devices we need to move to some other OS and none seems as well supported as the now getting obsolescent PalmOS.

So are there any good phone/PDAs available which will synchronise easily with a Linux desktop application? We're quite open to change, it doesn't have to be Evolution (and in many ways I'd prefer *not* to use Evolution), Thunderbird/Sunbird is quite OK for example.

We don't want to synchronise via anything 'out there' (like Google) but I'm quite happy to install a web/server application which a PDA and a desktop application can both synchronise with or which provides a reasonable interface itself.