Organic Chemistry I

First I found ghaddar's powerpoints extremely important. I used to study them with both ghaddar and haddadin, and I did really well with both.

True Haddadin explains 1004382 times better but you still have to study the chapter alone in both cases :)Ghaddar also provides powerpoints while Haddadin doesn't

Haddadin is more enjoyable and his exams are a better assessment of your knowledge