CO is the BEST airline! Had a two truly exceptional transcon flights over Easter weekend. Only a Silver Elite, yet my upgrade cleared the morning of departure. To my surprise, the 757 had a businessfirst cabin. The flight was a continuation from Lisbon. I have never experienced CO's businessfirst product, and I must admit that it is outstanding. Extremely comfortable seats, large PTV, and excellent food - Lobster and scallops over a bed of rice!
On my return trip on Sunday, LAX - EWR, my originally scheduled 4PM flight was sold in FC when I called the Elite line at 9PM PST. So, for an easy $75, I switched my return to the 9AM and got a confirmed upgrade. Again, I lucked out and got a businessfirst cabin! Service was just as good!
One slight drawback to business first is that the PTV do not show movies "on-demand". You have to watch when everyone else is watching.
I paid only $156.50 each way($313 RT) for my Easter weekend trip to LAX. I traveled on the busiest days and times. I am only a Silver Elite. And I still got upgraded to businessfirst! You just gotta love CO!