I will go for Semester system as it usually bound you to study daily and timely.In annual system you become very lenient(i suppose)
Moreover semester system helps you to evaluate your performance weekly as there are quizes and assignments mostly on weekly basis.It enables you to work in challenging enviornment in future too!
But it does not mean that people who attends annual system institution are not capable of any thing,They are best too...still semester system is preferable in every way.

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Giving up doesn't always mean you are weak … sometimes it means that you are strong enough to let go:)