I can second the U1. I got it after my modded Ender 5 that I fitted with a two-head toolchanger.

It’s night and day. The U1 isn’t quite as fast in real life as the marketing material says, but it’s still much faster than the Ender 5. It prints perfectly every time. Since I had it I had a single print failure, and that was because I didn’t clean the bed propperly and the print detatched from the fingerprinty bed. Other than that, every single print worked flawlessly.

The toolchanger also saves so much waste compared to a filament changer.

I know it’s beyond your stated budget, but I wouldn’t want anything else (except maybe a Prusa XL, but that thing is ridiculously expensive).

Btw, the U1 is rather open sourcy, and there’s a custom firmware that improves a lot of issues with the OG firmware.