Looking to purchace either one of the following ecu/piggyback systems (GReddy e-Manage, Hondata S200 Systems, or Apex-i v-afc) and was wondering which one is more "tunner friendly" or cost effective if plannig to add more tunnig parts. They are all around the same price and I don't want to waste time or espesially money getting the right one for my current app. I/H/E and sk2 IMF.