If I had to choose one (believe me, it's tough!), I would buy the fuchsia pink one, mainly because I don't wear much bright-coloured clothing and so this would give a great colour pop to a pastel-coloured outfit! I love the black contrast piping on the fuchsia one and the grey piping on the pale pink one.
Dean would probably kill me if I bought another handbag so soon after my recent Zara purchase, but a bright-coloured bag is on my list of must-have/must-buy staple items. Maybe if it goes on sale... although it's a pretty bargainous price already!