@KRAZYKAT – I’ve reviewed the Mani 2. It has more control over loading than the original, though I think the circuit is more surface-mount technology than the Mani 1, which means it’s less repairable if it goes wrong. If you’re happy with the Mani 1, I’m not sure I can say it’s that much of an upgrade. I’d hold off and save for something that might be more of a leap for you.
BTW: That Fosi pre is pretty amazing for such a cheap pre!