A lot of systems out there simple starter set the Bachmann basic 10 button one often in the train set not bad but limited functions but a easy start into DCC , gaugemaster dco1 not to bad a system ,you will open a big can of worms on this one but plenty under your limit a quick google search will bring up a lot Digitrax, Nce,Lenz so look round and if you see one that you like ask on here for further help