Well that's more preference, I personally like the Omron E5CN , E5CC & the MyPIN TA4 & TA8, some people frown at the Mypin but I have had success with them so idk you decide for your self , for SSR I use one that has a output rating of "25a @ 24v-380v DA SSR from FOTEk or Omron " .... now you...