Well so you've heard it from a Marinoni fan and expert, it's a Special and definitely worth keeping and taking care of. The wheels look to be both the same size to me. I thought that the seatpost looks to be just about at the "limit line" and as you grow (I know I was growing at 14) you'll eventually need more post, which really means you need a bigger frame. I detect a little bit of rust on the exterior, so I'd strongly recommend you spray the INTERIOR with JP Wiegle's Framesaver...this bike is worth it.