Geofencing is in iOS 4. And the API does allow you to set the radius. Some apps already use this. Reminders in iOS 5 is not really new except that its now part of the OS, but its using feature from iOS 4. Nothing new for iOS 5.
Pocket Informant on the App Store - has had location aware task contexts for awhile now. You set a context to a location, and PI will alert you when you are near there if that context has any tasks in it.
Its a little different than Reminders in that each task doesn't have a location - its a group of tasks. And you can get alerted when you get around that area, not when you leave. But those things are coming later anyway.
Just saying - this isn't all new. Apple's...
There are aspects of the MS Tools that are nice. And if you just touch XCode a little and don't use it day in and day out and LEARN it, then you could be forgiven for thinking that MS Tools are miles ahead. But I used MS Tools - everything from eMbedded Visual C++ to Visual Studio 2008 full time for 10 years. I've worked with the WP7 toolset. Its not much better. XCode 4 is miles ahead, but then I've taken the time to learn it.
Then I'm afraid you'll be sorely disappointed. Honeycomb's web browsing experience is a poor clone of Safari's. Not only does it feel slower, but it doesn't work that well. So if you'll be spending your time mostly in Chrome...I'm sorry.
Funny, I hit PDFs and web content that could certainly use a dual core CPU on my phone. Even on my iPhone 4 I hit lots of content that becomes almost so slow as to drive me to get up, walk across the room to my desktop! Isn't that insane? (I'm being funny and serious at the same time).