My usual tactic is the classical shoot them up with arraws, frontal clash with flanking while using hardcore troops, but I do like the cav only armies with some heavy horse archers (if I got them), a well-preformed attack here is devastating, hitting the enemy from the back and both flanks and then attack from the new back made by the enemy to counter the flanking charges.
Total destruction.

Weak horse archers are annoying for me though, I don't like hitting the half-strength enemy's back twice and lose. And I can't resist it.