I only bought it for low bit sound and it's perfect.
It's so filthy I actually said out loud... to myself... on my own, "This is disgusting!" and laughed like an evil galactic emperor who had just devised the most dastardly plan to take over the rest of the universe.
Having watched loads of demos on YouTube, I wasn't sure it would work as it just didn't sound right when a guitar was played through it (irrespective of the style and kit) but for the price I decided to take a risk as it will be used with a synth rather than a guitar.
And I love it. It will be perfect for my projects.
As for the other functions, I'll probably give them a go at some point. The fluid one is sounding the second most interesting with it's pseudorandom wobbles and pings, and maybe the ring one. But for now £30 for a low bit filter is perfect.
But now I suddenly have this crazy idea - what if I buy another set to fluid filter and the first set to low bit!?