Be careful with what programme and school you select. The school must have an audit procedure by an FAA administrator, this rules out Dubai. It is a mystery to me, and to an FAA examiner I spoke to how this school can operate under FAR Part 65.57?
Sheffield has a very good reputation, also AGS offer a correspondence course if you have limited time and a strong operations background.
If you want to know more about AGS correspondence course, drop me a line.
Good luck.