Bought this as my first analog synth, and my first any type of modular synth, with the ambition to get more into modular/semi modular in the future. This feels like a very good starting point for that.
For the price, a spectacular device if you like that amazing analog sound, tweaking and the ability to patch. Can produce some amazing fat sounds, and the Gray Meanie version looks so mean and sexy it's ridiculous. It's a slightly brighter gray color than many pictures make it seem however. I have barely scratched the surface of what it can do, but it's a lot of fun to play with. Having all parameters available for instant tweaking makes it fun, easy and satisfying to explore new sounds. And I absolutely LOVE the fact that it's rack mountable! Thank you for that Behringer! More rack units for the people.
The biggest con I think is the build quality. It's not very bad, but flip switches in particular feel cheap and scratchy and resonate the whole metallic case in a kinda cheap sounding way. And when you flip them (or plug in patch cables) the loud pops and crackles your speakers will make lets you know it's a live electrical signal path you're messing with - so maybe not something you'd want to do during a live session or while recording.
It's also quite easy to get clicks from the envelopes that you might not want, so pay close attention and learn where the limits are (as with anything).
I'm very happy with my purchase and I am looking forward to the exploring I will do in the near future to tame this mean beast.