depending on what you are doing, ecu tune for starters to get all the major stuff done. then use pcv with a map switch for whatever fine tuning you need for the alternative mapping, nos, race gas, etc etc. basically have a no map and run off ecu tune, then switch to second map that'd fine tune your fuel/timing tweaks for whatever secondary tuning you're doing.
on a side note, if you tune yourself with the ecu, you can install on on bike connector for ease of re-flashing.