Have a Windows phone, and it is remarkably non-intuitive.
Haven’t used the other systems, but it’s difficult to imagine them being worse.
I love my windows phone. I have the samsung focus and every time I look at someones Iphone or Android I feel like I went back in time. Their displays are cluttered and it’s hard to read the icons. On my phone, the display is one of the best around and it integrates with Exchange, Lync server, Facebook so I have all of work email, contacts, IM etc in one place.
"Intuitive" is not a word that springs immediately to mind in association with Microsoft. Are you surprised?