My advice is to look hard at 135 operators. 1. Its a different type of flying and you may or may not like it better than airline. 2. If you want to go mainline and you sign the contract with OO, you are limited to United and Delta to get you out of it. That most likely means that they have made some sort of agreement with OO to meter and not take too many. So take away Delta from OO and Endevour (due to metering), when hiring resumes, where are they going to pull those pilots from (AA WO, UA partners or 91k/135) since they cant decimate their regional partners. Since AA is not part of the contract, you cant go there (without quite a pentalty). AA cant pull everyone from their WOs since they would be decimated, where are they going to pull from? 135s, EDV and UA partners (not counting OO). United the same, meter from OO and other regional partners with "flow", will need to hire from EDV, AA WOs and 135. 135s are common place to hire for all 3. The number of 135/91k pilots hired at majors increased a ton over the last few years since they gave up the 500hrs 121 required.