Multi-color FDM recommendations

I think it's finally time to upgrade from my Ender 3, and the market has... grown substantially. I'm a bit out of my depth.

Definitely looking at a coreXY, and definitely prefer a multi-color system (multi-material really). My budget is around $600, but that's a bit flexible.

The Elegoo Centurion Carbon 2 looks attractive, and it's on sale. But I've heard good things about multi-head systems, particularly when it comes to waste from purging. Granted, that stretches my budget a bit.

What's the move? It seems like so many of the options (coughcoughBambu) have pretty gross anti-consumer practices. Are there any good options out there?

Update: Alright, I pulled the trigger on a Snapmaker U1. It seems like it's going to be the Ender 3 of tool changers: the open source darling that becomes the de facto standard for the mod community.