The Domination will not handle heavy oil unless you do some serious cover rework, so it would be a poor choice for medium to heavy.  I have problems with a house shot where the middle is flooded.  If the ball gets into the oil it does nothing, but when it gets out in the dry it is nasty, you just can't get it into the dry too soon.  I've been dulling the cover slowly and observing.  I'm down to a white Scotchbrite wipe with cleaner.  It has clouded the shiney finish and the ball now starts earlier so it isn't so darn squirrelly, but it still isn't much use in the fresh puddle.  On drier wood lanes it is different, a monster, and on a sport shot it is good if the oil isn't too heavy.  The ball works best on medium to lighter oil.  In the box condition it was pretty snappy but you had to find some dry boards or it just sailed.  From what I've seen the last Agent release (3rd one)from Storm was a lot better for the medium to heavy oil.