I am 5'6" and I prefer the 30 cm. It's just the right size. The 34 looked way too big on me and a bit duffle-bag-ish, but I think with a 26 I'd be filling it too much to truly show off the shape to best advantage. IMO, while there's a ton of capacity in a Lindy, since it's basically a big rectangle, almost like a shoebox, I prefer it at least half empty so that it does its slouchy fortune-cookie thing. Just something to think about. I have seen some adorable 26es, especially in croc, but I think 30 is so usable. Before baby #2, it was perfect for outings with a toddler, because I could throw in a snack and clothes change without a fuss. And you will wonder how you ever lived without the outside pockets!