The Roland System 500 Series Eurorack
Roland released an all in one modular system called the System 500 that was inspired by the System 700 and System 100M released in the vintage days.
If you lust after the classic roland analog filter or oscillator tone, then this is your ticket on the train of sonic exploration.
The Series features a Dual VCO, Dual VCF, Dual VCA, Dual ADSR, Dual LFO and an effects processing engine capable of creating an array of interesting sounds that can compliment an already existing modular setup or become the basis for a modular setup.
Check out a video from Roland for an in depth presentation of the power of the modules.