Following thing,

I was wondering about the url's from FeedBurner. With the recent migration to Google and the connection with Google AdSense my feed is now availible from three url's.

1. http://feedproxy.google.com/username
2. http://feeds.feedburner.com/username
3. http://feeds2.feedburner.com/username

From these three url's number 2 redirects to number three, but number
one is the nicest url I think. Number three is the one I always used.

So the question is: Which URL do you think is best to
use for the future and why.