Really appreciate the input, sdsearch! I've considered looking into the UA/CO program, but have been waiting to see what changes might come from the merger, and which program the combined companies FFP will look more like. UA does run UA express service TUS to LAX, which is good for going towards my Asia destinations, and CO has decent service out of TUS going east, so the flight availability is there. I need to do some more research.

I'll look hard at the changes to the SW program. I do use the web special prices when I can, although their full fare is often competitive with DL and others.

It's funny, DL has mostly treated me very well for a long time, and especially when I've had a problem or whenever I have had to deal with them directly, except for this continuing issue with the SWUs. So I am feeling a bit guilty for focusing so much on this issue, but 10 to 12 hours in a coach seat can be a serious motivating factor!

I just returned home from S. Korea, China and Japan on Saturday. Flew a code share with Korean Air, and was pleasantly surprised with the comfort of their coach seat. But I was on an M class fare and could not upgrade on the code share. As you said, not their metal, no upgrade allowed. Bummer.

I will continue to look for input from other Flyer Talk folks. This has to be the best place to get other people's opinions on this topic. Too bad someone doesn't put up a web site just to compare FF programs.

Thanks again -

Mike