Not too long ago, I finally got around to configuring Outlook to use RPC over HTTP on my laptop and my desktop at home so that I can get to my work email more conveniently. I love this feature and wish I had done it a lot sooner. Outlook Web Access is great for places where you don't have your own computer, but it's not the same as the full Outlook.
If you use Outlook, give it a try. If you work at Microsoft, you can find the instructions on the lower left of the Outlook Web Access front page.