Quick question for all you Flyertalkers.....I'm planning a trip to Madrid for a 10 day stay. The best fare i have found for the dates i am looking at (mid-april) is $586. I have miles on both American and United....would it be better to burn the miles or pay the fare and earn miles...and save the miles for later.

I guess the question is what for this time of year and the European market...what would be the better choice...miles or $$.