Personally I couldn't be more in love with MSFT tools (granted they're expensive and I'm using whatever free version they give us). I've worked with Java way back but can't help switching back (WPF, Silverlight for a short while, MVC). When people ask me why on Earth I prefer this, I always give them the same explanation: "MSFT development products for a straight-up developer are what Apple products to an average consumer. Things integrate together instantly and just... work!"