Stay away from mainstream breeders and use double the light people usually recommend :)
Buy seeds from high end breeders and go for popular tried and tested strains instead of new releases, and learn to feel good about paying +20€ per seeed.
I've never seen Cali weed being close to being close to being as good as high end strains grown at home.
In House Genetics is my go-to breeder, especially Platinum and Jelly Breath crosses rock.
Exotic genetix, Ethos genetics, Cannarado, Seed Junky, Bloom Seed Co., and BeLeaf are also great breeders.
Growing your own means you get to try different stuff and find your own favorites, enjoy the ride :)