2008-2015. I preferred the ERJ170 over the 73 or -88. But like I said, once you passed the curtain on all of them it was a Greyhound bus. I saw no differentiation of product between UA/DL/AA in steerage. Now, when it was a last minute ticket and only First was available then life was good! Coincidentally, the one airline that I can't stand, WN, has hands down the best people working for them providing the best customer service. If they would just get rid of that f#ck!ng 737.