I left US Airways and the E190.... Good airplane. Lots of performance and as advanced as avionics get these days. There is definitely a huge training cost/surge over there as people bid both on & off the bird. Upgrade is about 1.5 years.... Then folks usually bid back to Airbus right seat because it pays more after about year 4 or 5 due to rates and schedule/seniority. Or they bid 75 or A330 FO. Better schedule, more pay, and better QOL. Lots of training surge....