Vortex Sound Research

Hi people! Which one would you recommend for ambient music? I like both but can afford only one of them for now. Probably the Digitone would give me more creative freedom, as it is a sampler + synth to experiment and create full tracks and the Argon8M would have lesser functions but the sound of the Argon is really amazing. I will be pairing whichever I get with the Novation Launchkey MK3.