i like the new site because it doesn't totally crap out for me (in firefox) and the video's don't go into buffering mode at all (maybe they upped their streaming server capacity too)
either way it really doesn't look that different... and I don't ever see those ads (thanks adblock) so that's never a concern. (if you use firefox instead of internet explorer you too can ignore all the ads (images/iframes/flash) that you want as well
)