Im going to book an appointment with an academic adviser regarding my courses for next year and I was wondering if there is someone specific you recommend me to talk to.
I am sure all of them are very nice and knowledgeable but I never been to one before and just wanted to know

They are all good people

I honestly don't think there's any difference, they'll all give you the same advice. And it's not always good advice, either.

I've met with I think three of them...they were all really good!!

Take what they say with a grain of salt though. They are all well intending, but don't always say what they should. For e.g. they told my sister in second year she would never get into Canadian med school because of her marks ...and she just did, so don't be discouraged if they say something on those lines!

They don't really know much... they'll probably tell you to contact the school/department that you plan on applying to.
But they're all really nice