The Lenz compact is a pretty good basic controller suitable for OO and N. Limited number of function buttons so you won't get the best out of sound locos. Easy to use unit, that and a power supply - 14-16v ac or 14-18v dc and you're good to go. Can also plug a Roco multimaus in as a walkaround controller. The power connecting clip for digital is Hornby part R8242 - doesn't have the built in suppression capacitor.