well one option - as long as you're not in ahurry - would be the new prusa.
https://www.prusa3d.com/product/original-prusa-xl-2/
even the full spec with multiple toolheads would be well within your budget. Think that comes in at around 3500 euros.
But at the end of the day, it's just an fdm printer. Albeit it a very good one with a lot of cool features.
For the quality upgrade thugh resin really makes the most sense.
You don't get the design versatility of the powder approach, so still have to take overhangs etc into account.
But finish quality is actually higher than sls.
https://phrozen3d.com/collections/re...er?aff=3#specs
largest one I can find at a sensible price.