The Legacy Stripe is so FUN but the Signature Stripe will be less of a hassle to keep clean. The fabric on the Legacy Stripe seems like it would easily get dirty/attract lint... but it is GORGEOUS! If you go with the Signature Stripe, you can always have it monogrammed to make it a little more special... that's what I did with mine!
I have the legacy stripe one and adore it! Also, while I was afraid of getting it dirty, I have used it a lot and it's fine. One time I found a tiny stain on one of the stripes - I used a baby wipe and it came out right away and was fine.