^yup I'm 5'10" and looove the 35!!
I say speedy 30, but if you are not used the style of bag it will look big at first. Trust me it wont take long and you will be drooling for the 30, the 25 will seem small.
Hmm...I'm close to 5'9", and have a 30, which I love. Now i'm curious about a 35. Is there a pic on the board somewhere of someone who is close to our height carrying a 35?