CMF Buds 2a vs 2 Plus vs Pro 2 for balanced audio?

I prefer:

balanced & smooth sound

clear vocals

no heavy/punchy bass

comfortable for long listening

I listen to chill music + some Skrillex/EDM occasionally.

Is upgrading to Plus/Pro 2 worth it, or is 2a enough? Which sounds more natural?

People who have actually used these, especially multiple variants:

Which sounds more natural?

Is Pro 2 too bass heavy?

Is 2 Plus the sweet spot?

Is 2a enough or noticeably worse?

Would love honest long-term user reviews.