So, why NOT a 727? These sturdy jets have formed the backbone of the US transcontinental fleet for 30 years and continue to give excellent service. Yes, they are not as new or as high-tech as the MD-11, 777 or A340 but they perform their jobs well. I certainly like flying in 727s; despite their 3 engines they are quieter inside than MD80s. They are also very comfortable and smooth. Alas, even mild turbulence makes them somewhat choppy. The lack of inflight entertainment is also a minus (UA is the exception).
So, I say, take the 727 and tell us how it was.