The STH 16 has a lower underboot height and more metal than the Jester, and an adjustable toe piece height for when your boot soles get really worn. The heel mounting pattern is super wide, I don't think I've ever heard of one ripping out.
While they don't have the elasticity of the FKS in the heel, STH 16s are my favorite binders right now. All the other STH models are plasticy trash though, so if you don't need a 9-16 binder, get a low grade FKS or PX12s or PX14s.