Niche Zero

Tbh I love my Niche, but that price is too high. I would wait a bit and see if you can find one used. 

When I had a Niche Zero I almost bought a Fellow Ode with the SSP Burrs for brew usage. Got a Niche Duo instead just to keep the counter tidier.

Ive got a Niche Zero paired with a Silvia and haven't had any issues. Perhaps my palate isn't as developed for coffee, but I think it handles light roast just fine.

Was in a similar boat and recently got the Bambino Plus and Niche. Got a bunch of accessories too and was about £1100 all in and would recommend it

The Casa is much better for medium to light roast. The workflow is also better imo because of the auto off and no RDT. Niche zero is better for darker roast beans and fuller body. It comes down to what you prefer. Clarity or body

I have 4. A C40 and a Zp6 for pour over (one stays at work). And a DF64V and a niche zero for espresso. Got the Df64V to try flat burrs for espresso so might sell the niche but tempted to keep it for dark roasts.

Does it have to be a single dose grinder? I see everyone is going that route since you are coming from the Niche and were considering other single dosing ones, but with that kind of budget you could get some nice grinder with grind by weight integration and a little 250gr hopper... On my side going from the Niche Zero to a Eureka Atom 65 high a small hopper has been an amazing upgrade in term of workflow, and the only thing I'm missing is grind by weight. But the fluff of the ground on the Eureka Atom mean I don't even do WDT anymore, just some tapping and I get a much better puck prep than with the Niche where I was doing it all, RDT, WDT, etc. I'm definitely not missing having to wet my beans to avoid retention and all. Overall I find myself never using my Niche anymore except for decaf, but it's true I don't mind swapping beans only once a week and going through a whole pack at once instead of having a rotation of 3-4 different kinds.