okay--i am really struggling with a new bag purchase. I only have small/medium bags. 30 cm birkins, 31 bolide, 28 kelly and plume. I am starting to feel that my 30's are bordering on cutesy sometimes...........i am wanting a larger birkin. I THINK. I see the 35's on people and they look soooooooooo chic but I am not chic. Additonally, I dont carry tons of stuff in my bag BUT there are times I want room to stuff a sweater and a water bottle in................For those of you who have both 30 and 35 which do you prefer and why?