What would make a better summon for a high lvl Rogue Palemaster, a Greater Bodak or a Ghoul King?

I plan on making a Rogue/Wiz/PM and am torn between 15 or 16 levels in PM.

Any advice out there? Oh definately take 16 levels of PM. Reason: at 16th level, PMs get an Epic Spell feat. If you time it so you get PM16 on a normal feat level, you can get 2 epic spells. The obvious selection would be Epic Mage Armour and Epic Warding.