Synths with/without built-in FX?

There are purists who insist that onboard FX in analogue synths are the work of the devil! However, having everything in one box can really speed up workflow. There are also some great effects built into synths – ie the grungy delay in the Minilogue, the dual-FX (fully bypassable) in the Prophet-6/OB-6 or the deeply modulatable FX in the DeepMind 12.