I like Randowhale and Minnowbooster but the resteem services turn me off. As do auto exchange bots. I also use randowhale and minnowbooster to give other people who I think post is under value a boost and only give them to myself when I am doing fund raisers. For me I want to grow in an organic way and some of these services don't seem to be an organic way to grow, just a way for maker of the account to make money.