I've been in IT for over 20 years, almost exclusively Microsoft. I've been a MCSE for for 14 years and even today's day job is IT Director for a 100% Microsoft shop. My Windows knowledge and experience has paid for a lot of my Coke machines.
I have had various flavors of Blackberry, Windows and Android devices over the years. I finally broke down and got an iPhone about a year ago. I am clearly no Apple fanboi but I can, without reservation, say it is the best mobile device I have used.
Tablet-wise, I received an iPad for my anniversary last year, and I am very pleased with it. My suggestion would be the iPad, or "maybe" the Microsoft tablet if it is running Windows 8. We have about 2,000 Windows 7 Tablets in the field here are work and they have been very solid with the bonus that IE is still pretty much the default browser for most 'work' websites - like Outlook Web Access, SharePoint, etc.
Personally - I would not go down the road of the Android-based tablets. I've been very disappointed in the performance and stability of the 'droid devices I have used, particularly when compared to the iPad/iPhone. Personally I don't see the benefit of the Android over the two other options from Apple or Microsoft.
That is a lot of words for .02
Jim