> but I would not like to get tied to one supplier. Like I use FinchSync to snyc my contacts, Todos and Reminders with Thunderbird and SunBird.

I would swap IPhone with Android, as freedom and market share are miles ahead. If market share growth comes into play, only android remains - but nokia still has the pole position in actual market share and probably biz integration with MS products, but is relatively stagnant [can also be read as reliable and sufficient, but not sexy<g>]. If devices with real keys are your target, I'd add Nokia E series into my check list, for pure touch screen devices I'd leave Nokia out.
I personally own Nokia E 52, but mostly use it as a phone, occasionally todo list, in between reader if for WLan and Smart card PDF/Work/Html and sometimes navigation. Also as quick backup device via WLan/USB on my rather large smart card, if no USB stick is available. Next personal device will probably be Android: either one of the coming Pads or a Smartphone with large screen like the Samsung Galaxy or HTC Desire, as I am still not sure if I prefer 1 or 2 devices.

my 0.000023 EUR

thomas