I have lots of love for my palm treo windows version
I would recomend in what ever you pick go with one that is windows mobile in platform & try to stay away from smart phones and go with pocket PC phones!
There is more ways to hack and take advantage of flaws in the software including tracking your phone free and getting free services etc...
Im a computer geek so in your case though you might want to go for the more flashy fragil :momaru: :greddy: ones or something.