I second everyone else who has said that the bad points about DLs coach service are overstated. Indeed DLs coach seat pitch is 31" (Well, 31-33" according to the website. Incidentally, is anyone aware of how this works out? Are the majority of the seats 31" or 32"? Anyone know?) but they are not alone. Among the US majors, CO, NW, US, HP, UA (in E-minus), all have a sitch pitch similar to DLs. Among the Euro-carriers, BA, VS, LX, LH, KL, etc. have the same pitch on (the vast majority) of their transatlantic aircraft. Thus, to call DLs pitch the "worst by far" is stretching it just a little bit and even enters the realm of the ludicrous.
Furthermore, what is it with some of you and PTVs? I am sure they are a nice touch (I will fly on my first PTV equipped aircraft this summer) but I agree that a good book or magazine is just as effective at passing the time away. I mean come on, all of my international flying has, so far, been done on aircraft without PTVs and I'm still alive. Some of you just act like it is the end of the world if you don't have that little PTV in front of you on every single flight.
DL is an airline and like all airlines they will anger you from time to time. However, they also have their strong points. They have, IMHO, the very best flight attendants among the US majors. They have an excellent safety record, well maintained planes, expert pilots, and will get your from point A to point B safely and effeciently. Economy Class is Economy Class. There is very little that distinguishes one airline from another.
Anyway, just my 2 cents.
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