24" accelerates better, is a little stronger and makes the bike fit shorter (like a bmx but with an adult sized TT)
Isn't the azonic steelhead going for like 150$ on jenson right now. That woul dbe a good place to start. Either that or look at the Transition TrailOrPark...not cheap but oh god the frame is amazing to ride. (I LOVE STEEL)
Can't find info on a mtb haro...hmmm...might because they don't sell