I would suggest drilling the burgundy ringer pin up to give you more length to use as your drier lane / weakest ball. The burgundy ringer has a strong hook motion downlane. If you are looking for something to open the lane up later in the night when the pin down balls are hooking too early, I would suggest the Fortera Exile or the Brute. Both of these balls are clean through the front part of the lane and have a strong motion off the spot. If you are looking for something a little smoother overall that would fit above the burgundy ringer, then I would suggest a pin up Melee or LT-48. Both of these balls take well to surface changes and would be good for lighter to medium oil conditions. If you are looking for something slightly weaker than a Ringer, then a Strike King would do the job.