Just my two cents.... I left a regional for an AdHoc a couple years ago for a quick upgrade (aka money). It was HORRIBLE. Fly-by-night operations, questionable mx, non-union, old equipment, pressure to "move the rig", the list goes on...... I quit after one summer and came right back to the airlines. Money is good now here (60,000 first year) under 2 year upgrades, more days off...