There are so many things moderately wrong with it, but I absolutely love my Waldorf Blofeld (keys), which somehow survived being shoved underneath multiple planes wrapped in a quilt intact!
The interface is like driving a car down the highway which six knobs, the audio engine sometimes is a bit glitchy, and the limited CPU resources mean it can very easily decide to change into a really fun monosynth. but I love the sound of the thing quite a lot. In terms of raw possibility, it is a modular in a box. It is relatively in expensive. It gives me all the FM, PWM, weird modulation, complex envelopes, comb filter, wavetable goodness that I would normally want. (Samples that come with it are pretty disappointing though, and I’ve been two lazy to change them for something else.)
In particular, I love routing the pitch/mod wheels to control depth of some weird modulation, such that my favorite patch that I ever programmed was something like a sinewave that went into some weird burbly FM whenever I decided that was needed. Oh, and combining that with the arpeggiator? Nice!
Though the editing is quite idiosyncratic, Jexus’s demo should convey a lot of what I love about it.
I have no need or desire for any other Polysynth… (Well, except the Reface DX, but that’s a different story.)