<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by BBRebozo:
a colleague of mine who travels to various European cities regularly (last week, he was in Vienna) says that he rarely "wastes" his frequent flyer miles on upgrades these days, since flights to Europe aren't very full, and therefore the coach section is roomier and more comfortable than the business class section. </font>
I personally only go for upgrades if the flight is full. If I can get a aisle seat in coach, especially if it's been configured with extra leg room, and I have an empty seat next to me, I'm more than happy.
If it's crowded, though, then I try to get the upgrade.