Before I take the Surface Plunge...

There is a local store getting some Microsoft Surface's units in this weekend(in Asia) but wanted to check on a few things before I purchase with those that have owned this for a week now. No return policy here!! 1) Performance issues - Will I be able to consistently do things like use Skype, one note, and excel at the same time? Or will I be really slowing down by that point? Waiting 2 - 3 seconds for things to open isn't a killer for me but I need to be speedy after that. 2) Speakers - Are these acceptable to watch movies with one or two other people in the room? 3) Mail - I saw many complaints about this. After a week are you able to use this for general use? I will be using this as a daily driver for presentations (via HDMI) and meetings (note taking), updating excel files, and Skype/lync communication. I also will be using this with my Xbox and as a media player when I travel. The apps that I am hoping will come to RT are offline Skydrive use (like the win7/8 app) and utorrent.