EarthQuaker Devices The Wave Transformer

This module is awesome. First of all, this might as well be five stars, but I want to draw attention to some minor things: with a busy patch the small knobs are a bit finicky, and the micro-tuning knob did not need to take up that much real-estate; neither did the transform knob. Apart from these layout-issues, this thing is fantastic.

It is a very versatile and very very stable oscillator. You get all the basic functionalities that you might want and need, but on top you get much more. The soft sync, transform, and shape insert functions extend the regular VCO functionality very naturally. The linear and exponential CV give versatile control. You can do very interesting self-modulation and wave-shaping and you also have access to various sub-harmonic shenanigans.

With a busy patch it can get very rough-sounding, which comes down to taste. Personally, I like it. I think the price is fair, and while the module is a bit on the larger side of things I still think its absolutely worth it. I could also see this as a good option as the first VCO of someone starting out, because it nails all the basics, but invites you to experiment.