IMO having flown both. The Bus has better trips, layovers and typically less legs a day. But there is a very large discrepancy between pairings. Junior guys are getting 10 hour 3 days that include red eye flying, while mid level guys get 18-20 hour 3 days and senior guys get 8-10 hour 1 days. The 190 has hardly any 10 hour 3 days and not many redeyes, none back when I was on it. The pairings also seem more consistent, as in most are worth between 5 and 5.5 a day. If you have to be junior, I think being junior on the 190 is better QOL, but that's just me.