Use this and love it. Great scent. Rinses clean and has really helped with my dry skin. They have a good line of products which includes aftershave balm and shave cream. Haven't tried either.
I bought it for cleaning my face before shaving. However, I've discovered it lathers great with a brush -- I just leave it on the soap dish and use my brush to lather onto my face. It's phenomenal and not sold as such. It's also the only soap I've tried that is truly "moisturizing" without a lot of chemicals. I now use it as my basic travel soap for wash and for shaving when traveling (it doesn't have to go in the 3-1-1 bag when you go through security.
The shave cream soap by Shea Moisture is generally rated poorly both here on B&B and on Amazon. So I have not been inclined to buy it. It's a completely different formulation and product, so I'm not inclined to try it. If they were smart, they'd take their basic soap and just cut it in a puck and sell it for shaving. It would be one of the most highly rated.
I try a lot of soaps because I'm allergic to 4-5 of the chemicals that are used as emollients in a variety of bathroom products -- the stuff that keeps everything suspended in nice creamy liquid form. I'm also sensitive to the caustic properties in some soaps (such as the current Williams shave puck). So I only try products after a careful review of ingredients. And the ingredients in both their shea butter soap and their three butter utility soap are absolutely fantastic.
Quick addendum to answer your original question: The Shea butter soap lathers slightly better than the three butter utility soap. However, I like the extra oils/butters in the three butter utility soap for an all purpose body, face, and shave soap, so I currently take the utility soap on the road when I travel. I plan to keep using both types of soap as they have slightly different ingredients.
I use it on occasion, very slick, and very good conditioning natural oils for the skin.
The tea tree aftershave is a very good bump preventer with a mild grapefruit scent, very nice in the hot weather.
Good products that deserve more following.