If this is not a troll post, you definitely made a huge wrong move... mid tier turnover is much worse than big 4 and the working hours are a lot worse than big4. Also, the pay is very low given that all the big4s revised their pay. Mid tier will even try to bind you with their so called bonds to prevent staff from leaving to big 4 within 2 years. Benefits wise, big 4 is also much better with transport, food and medical allowance. Trust me big 4 is really getting worse and I cant imagine the life at mid tier.