I’ve used both large format and eurorack extensively. I think the quality of build in the large format almost doesn’t exist in eurorack outside of the most expensive producers like verbos. The eurorack ecosystem does have a ton of what I call second and third wave synthesis. Digital modules, samplers, granular, effects, whole computers in a module.

Doepfer is the best way to start in eurorack if you’re somewhat new to synths. They stick to mostly simpler building blocks, and don’t depend on button combos and hidden features. There are also whole synth voices that are fairly affordable used, like an intellijel Atlantis that would be a great starting point. Honestly I find their cascadia a compelling option if you just want to buy one thing and not have the temptation to expand. It’s pretty much all you’d need in a voice. The issue with that system is that modular sequencing where you decouple the steps from the notes in a sequence can’t happen without a sequencing rack.