I've traveled both CO and VX first and can truly say that VX first is in a class by itself when being compared to other F classes on domestic routes. VX first is identical to many 757 transatlantic configurations. CO is just like most other domestic firsts with your usual seat pitch and decent recline. VX gives you a 55in pitch and recline to about 150 degrees. It is in reality closer to an international business class rather than to most domestic firsts. The experience is better, service is superb, free wifi, direct tv, new planes. I would chose VX all the way, unless you want to gain exposure to other airlines as well. The price can sway you to CO I suppose, but lounge access shouldnt turn you off of trying a VX first experience. If all domestic F went the way of VX, we would have an entirely different air travel experience in its entirety.