The Delta Connection carriers has a few more CR9s (157) than they do E70s (21) and E75s (101) as of 12/31/18, but yes, the 2-class E-jets are nice. I appreciate the extra shoulder room vs. the CR7/CR9 in coach. They have been in the fleet for a while -- I can think of Shuttle America flights (DTW-SLC?) in 2007 or earlier.