Other people have suggested these before, but I agree: Crystal Visions, Hanson Roberts, Shadowscapes, Llewellyn. I also find the Waking the Wild Spirit deck very cheerful, but alas, it's OOP and hard to get now.
Probably Anna K, Dreaming Way and Stella's --in that order. Although that's a hard question, because my go-to deck is Kat Black's Golden --perhaps less friendly, but much more intuitive for me.
Neither of these decks appealed to me very much when I first looked at them. The Robin Wood sat untouched for quite a while and I nearly sold it. The Gaian I decided to try out the Fool's Dog app on a whim.
Since then they have both won me over completely. I love them and I would definitely describe them as friendly.