I normally run an Autarch on Jetbike, a Farseer and a pair of Warlocks or Spiritseers at 2000 points and find they work very well. While not beatsticks, the buffs they can give to surrounding units make them easily worth their points and the Autarch is punchy enough to finish off units that have been softened up by shooting first. His greatest kill to date was skewering a Storm Raven in melee.