It took me a while to warm up to G9 - I was 100% G8 before. However, as I've seen more and more assets being offered for G9 and conversions of poses from G8, I've started to love G9 - especially now that I've moved to DAZ3D Alpha 2025/2026. Yes, it sucks having to build whole new libraries of clothing, shoes, etc. but I've adapted.
@eelgoo, as for hair, I'm very pleased with the new stuff from FE.