I would suggest the flight school in dubai.
They operate 5-6 piper warriors there. Prices range from Dhs.450 to Dhs.550 an hour. I got my ppl there and im happy with the quality of training there. Instructors are top notch and know their stuff. Im not sure about the schools in UAQ or Fujairah though. Havent heard much about them. The Dubai flight school is located at terminal two between the fedex and dhl hangars.