Since 5-6 years ago, I've decided that United was absolute rubbish. Their quality of service has hit rock bottom, reminiscent of NWA and American.

When I fly to Europe, I take the European airlines when possible. In May, I took Air France (B+) and last year it was Air Berlin (B+ as well, which is good for a discount airline). I've quit flying to Asia because I really can't deal with the long flight times and horrible service.