Replying to What outerwear to buy?

Hello guys, im not really the one with the most knowledge in skiing gear, but i'm looking for a jacket and snow pants.
I have been looking at Saga's 10/11 but im not sure how baggy it is. (i guess it depends on what size you choose)
i dont want something WAY too baggy, as im 50% of the time in offpiste, and 50% in the park, so it should be nice looking but i still want to do offpiste.

i have been looking specially at things like Saga and First-Drop.. they are pretty cheap, compared to many other skijackets/pants, does this means they aint very warm or what?

So overall im looking for something like this:
- A baggy look, but not so baggy that my jacket reaches my knees.
- Able to do offpiste
- Able to keep me warm, when higher up on the mountains.

Is what makes some skiiers (like Simon Dumont in his red/white Oakley air raid) looking SO baggy, is that because he gets it in oversize?
So i could just buy a Large or something (i'm 17)

Would be great with some feedback, im from a country with no mountains so dont judge me too hard ;)