I use both on a daily basis. I think that WinMo has more potential to be a great mobile OS, but right now it's a bit slow and bloated. And in a work enviornment, nothing beats the Blackberry. It is as simpla as that.
If MS can ever get WinMo up to it's potential, look out, because it could be a great phone OS, but for right now, Blackberry rules the roost.
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