Suggest you go for Toyota or Nissan. Both brands carry good resale value. Try buying one from someone who is leaving Qatar rather than from dealers of sell second-hand cars. It would save you some cash. Also, the later the model, the easier to get customers when you want to resell.
By the way, your statement "Returned back to Doha...third time" was eye-catching. The Riyal surely has some great magnetic pull!