I saw this girl with a keepall and using it like a speedy. It looked ridiculous! She only had her wallet and some papers in it! I saw when she was paying for stuff.
DON'T BE THAT WOMAN! Stick with the 30.
The Keepall is much bigger than the 35 though, my Miroir Speedy is along the lines of a 35 and is nowhere near the size of a Keepall, not even the 45.