Traditional courses are known to give a very strong scientific background. You’ll have a lot of in-depth lectures so will get to really understand the background science to a level of depth that you wouldn’t quite achieve with an integrated/PBL course. Some people find it suits them better to have that firm grounding of knowledge early on so they can build on it in later years. Whereas with integrated/PBL course you’ll revisit the same content and keep adding more to it each time.
Another advantage of a traditional course is that you’ll have quite a structured learning approach, so you’ll learn each system in turn: physiology, anatomy, pathology. In many ways it’s more similar to the way you’ll have previously learnt in school. The learning is also less independent in the sense that a lot of the information will be delivered to you so you won’t have go and do your own research.