Here's my Vegas 10 first-looks article:

Preview: Sony Vegas Pro 10 at DVInfo.net (http://www.dvinfo.net/article/post/preview-sony-vegas-pro-10.html)

Great, thank you Ed,
but does 10 support 5/7D files straight from the camera?
thanks!

Buba:

I have dropped my 5 and T2i files unto the time line, and playback has been pretty good, even using a couple of filters. With the default settings, it will reduce quality to get a fairly clean playback. Seems 10 times better than Vegas 9.