BlizUF_LMH4 is little more than a hackjob on MobHealth_BlizzardFrames, updated to use Ace3, and LibMobHealth-4.0. Unlike the above mentioned addon, this one saves it's settings between login/logout, as well as having a simple GUI to modify how BlizUF looks, including positioning of the text labels, as well as whether or not to display percentages and/or Absolute values.
Disclaimer: The absolute values provided for HP only affect the default Blizzard target frame, and are only estimates. HP estimation is provided by LibMobHealth-4.0 and not by this addon. If you feel the values displayed are incorrect, please leave feedback at the appropriate LibMobHealth-4.0 thread.