So why, you'd wanna buy a 13 year old synth module? First because you're after the Waldorf digital sound at an affordable price. Second, the device has matured and probable issues with the firmware have been fixed. And third the community has matured, meaning there are thousands of sounds and utilities for it, and you won't get stuck with just the support files from the vendor.
Blofeld, sounds AMAZING! Some people compare it with Largo VST, and although the later sounds excellent too, they DO NOT sound the same. This is a device which carries out the legacy of Waldorf's rich sound, and you'll reckon that as soon as you start to test the presets.
It's built like a tank, inside a metal housing. However there are sacrifices to the quality. The DSP is not too powerful, so polyphony may drop significantly depending on what features you use. Also many people have reported that the rotary encoders, do not work properly after years of use.
Speaking of encoders, this is NOT a hands on device! It would be great if you could assign the 4 knobs to the W, X, Y, Z controllers, but I haven't found such option. Also a big absence in my opinion is a confirmation dialog when you try to switch sounds. You can easily lose the sound you created if you're not careful.
Would I recommend it? Yes, more or less, but it may be time for Waldorf to upgrade their design to 2020 standards.