I fared up to a value fare a few months ago (price difference was only $50 -60 more than hot deals) for PDX-HNL inaugural on 9/20/10. No U was left at that time but I just checked and I'm in a F seat. Good outcome on my first value fare.
Now just have to call in cert ugrades for the remaining flights for the year
DOH F is sold out on my BOS-PDX flight on 9/17