  In this work, we confront ten cosmological models with observational $H(z)$
data. The possible interaction between dark energy and dust matter is allowed
in some of these models. Also, we consider the possibility of (effective)
equation-of-state parameter (EoS) crossing -1. We find that the best models
have an oscillating feature for both $H(z)$ and EoS, with the EoS crossing -1
around redshift $z\sim 1.5$.
