Resto hero talents

Resto hero talents; which ones do you use and why? How much do the playstyles differ? Both have relatively passive effects that you put into the field that matches your heals.

Which one would you recommend going for for someone who hasn’t healed on a Shammy in a few years.

Edit: I thought Totemic moved your healing rain to the most concentrated location. It doesn’t do that anymore?

can anyone give a talent tree for resto shammy totemic. there is so many different versions and looking for best one for mythic dungeons