I've flown NW
on DC9 (YYZ
) and A320 (MSP
). The DC9 interiors were somewhat old. Ditto for the A320 --> I think it was their -100 series and the cushions on the seat backs were just non-existent (I felt the metal frame of the seat through the cushion). MSP
was also big and cumbersome to transfer through (and I found some MSP
retailers to be slow and uninterested at what they're doing - just a personal observation).
In contrast, CO
has been consistently good. Although IAH
is HUGE and plenty of walking is required if you get far gates, it was an uneventful transfer. I flew SFO
(B737-800, redeye, very nice plane with *well-cushioned* seats) and transfer to EWR
through their B757 (older, I slept most of the way). At EWR
, their terminal C is a lot more convenient to transfer through (finger shaped).
Although, in NWA's defense, their DTW
hub is very nice; I was coming back from SFO
on their older 757-200's and had the opportunity to walk around before my A319 YYZ
leg. The train inside the terminal was a nice touch. The A319 felt *much* newer than their older A320s.
From my experience with NWA's DC9's and A320's, I would stick with CO
. You get IFE and a better meal (IMHO, CO
offers at least a *hot* sandwich for dinner). I find CO
's staff to be more friendly too.