So I've not owned a pair of trainers since high school PE but now I really want some 
I was looking at Stan smiths or gazelles... my teenage sister informs me she thinks these are 'two years ago' 
Firstly, is she right?! Secondly, if so, which should I be looking for?
Also, if not and the adidas options are still 'in', who should I go for in terms of comfort??
Thanks you, you wise people 