9,13,16 sounds like all bases covered bro, especially if you have a few different boards to play around with. I haven't ridden an '08 best 13, but i'm sure with a big board you could have fun probly 15knts maybe even 12 and if it picks up just grab another board. It seems like these newer kites are getting faster and more power from smaller sizes. I've got an 11 and a 16, which can leave a gap but i usually make out ok with a board swap. Just remember when you get those new kites to take a moment and embrace that fresh, crisp, new kite smell and feel, it gives you that warm fuzzy feeling inside
