I enjoyed the first one, and the following books just sucked.
They're very campy, and definitely have moments of good fun, but there's not a whole lot of original material, and a bunch of 'hero enters battlefield and saves the day!' type interactions.
Still, those Spartan Model Warrior Bodies were fucking rad.
... with gigantic melancholies and gigantic mirth, to tread the jeweled thrones of the Earth under his sandalled feet.