I use a honchkrow/Darkrai deck, nice pair of lvl x's, and if you want to get it going quickly, just make sure you have the good trainers and set up cards. SW Weavile to get your darkness energys, SW furret to use keen eye, celios/bebe's, and good draw supporters like Oak's Visit and Rowan.
Another good pair with darkria can be DP Shiftry, nothing like dealing out 50 + 20 for each of your two flips...Plus 10 for each basic dark energy, and it's got 120hp and darkness fan.
What did you have in mind in the first place?