That is my exact phone. I tried to add a protective case but it was too bulky with the case. So I use it as it is and it fits great in my pockets. I am pretty sure there is an RDP app for the iPhone but I hear it is slower than normal RDP on Windows Mobile.
As far as speeds go my friend and I tested our phones with multiple web pages and my phone beat his original iPhone on every page. He upgraded to the new iPhone a couple of weeks ago and we tested our speeds again while surfing the web and his phone beat mine. It wasn't a huge difference either way but the new iPhone does surf the web faster than any other phone I have seen.
