If u hav the spare cash, Blitz i-color, first full color boost controller on the market, it has combined the Blitz Power ID with the Blitz SBC and given it a full color interface display unit...mind-blowing display, if u want something that holds boost well, GReddy Profec B Spec2 or Profec E-01. I've heard the turbosmart ones hold boost well too. The avc-r is not bad, but definitely not the best in holding boost. However, it's easy to use and pretty comprehensive.