I just purchase three 12inch kicker cvx's. My ? is, is it better to run all three on a single amp capable of pushing all three or have each 12inch sub with thier on amp.
It would be better, IMO, to wire them to a single amp. That way you don't have to worry about the gain being a little different on one sub than another which will give you some consistency. It will also make life a lot simpler. What voice coil configuration are the subs? What kind of budget for an amp do you have?
well budget is not a problem and im not even sure how to wire these subs to one amp, I can tell you that each sub is dual voice coil at 4ohms at about 1500w each max peak. I can use some advise on which amp is the best and at what wattage would be best for these subs.
Look here to see how to wire them. Look for an amp that does about 3000W RMS @ 2 Ohms. That will give you some headroom and not destroy your subs.