I would stay at the regional. A 135 Citation position would be a stepping-stone, that's excatly what the regionals are for. I see that as a side-step all the way. I know how it feels, when I was at the regionals I felt like I was doing time.

Have some patience, and don't just focus on NetJets. Citation Shares and FlexJet are great companies as well (owned by Cessna & Bombardier) talk about security. As far as a 'Good' corporate job, those are hard to come by, especially without int'l experience, but try anyway, what the hell.