Portability of MB compared to MBP

[joe8232]

I am looking into getting either a macbook pro or macbook for uni in the autumn. With the student discount the macbook pro looks like a really good machine but i am not too sure how portable it is going to be. Looking at the specs i saw that it comes in at 2.5kg whereas the mb comes in at 2.35 so even though the mbp has a 15inch screen it doesn't seem to be a lot heavier - is this the general consensus. I guess what i am asking is whether the weight difference is noticable since there isn't an apple store near where i live.