Pros
You will work with some highly qualified instructors. Medical coverage is good. Free parking and coffee. Generally good facilities and training devices. You will receive frequent, insincere flattery about your relative importance as a "Team Mate".
Cons
Instructors are salaried, chaotically scheduled, and expected to work whenever called; save for a few Federal Air Regulations regarding instructor duty (which only apply if you are instructing airline clients) there are no work rules save for "you work, we rule!" Starting pay is only attractive to people who haven't gone very far in their aviation career, people with marginal flight and instructing experience. For everyone else, pay is 35% below industry standard, all to work for a company who crows about their "elite training provider" status. Expect to work a frequently changing schedule of six days on with one day off, the one day off being an "on call" day. Job applicants should not believe the "four days on, three days off" lie. The overtime or incentive pay programs are a joke, only apply under certain "conditions" and are nebulously applied by what has to be the worst band of managers that you'll ever meet. Expect no extra pay for most work because it "doesn't apply in your case". Surprisingly, instructors are generally treated with disdain by management, no one will ever ask your opinion about pay, benefits or working conditions; everything is unilateral and "at company discretion". Center managers and below are generally vindictive and poorly qualified, think in terms of what floats to the top in a cesspool. If there is one wet-behind-the-ears, under-educated misfit instructor on the team, well then, you are looking at the next Program Manager. Nobody else wants the job, since they function (poor choice of words) as glorified schedulers and otherwise carry out whatever goofball whims or policies are sent down from the next layer of incompetents above them. There are always a few good people, but they are completely overwhelmed by the structure of deliberate incompetence. If you are asked to sign a multi-year training contract, why not join the Army? FlightSafety was bought by Berkshire Hathaway and, since then, it has been a "race to the bottom" since the Berkshire Hathaway motto appears to be "profits above all". FlightSafety senior managers are lavished large annual bonuses for trashing their own employee benefits; cancelled pension plan, measly 401k match, static pay, deceptive pay practices, all so the big annual check can go to Berkshire. Summary: Go where you are appreciated. If you take the job, expect to work a brutal schedule that will NEVER get better. Expect constant insincere nebulous promises of "coming improvements" that will never materialize.