I must admit that I love my Hull pottery OS mug. I think the next runner up is my bicentennial mug that was the promotional Williams mug. Let's see your choices!
In terms of performance...it's a awesome soap; great lather, lubercation, cushion and glide. It's hypo-allergenic and contains 40% moisturizers, including Aloe Vera & Shea Butter with no animal products and no harsh chemicals to irritate my sensitive skin;
Plus I add about 6-8 drops of glycerine per puck (and about 6 drops of Clubman Citrus Musk), before I melt it (nuke), extra lubercation, cushion, glide and scent .
Laughter is the [shaving lather]...that sweeps away the cobwebs of your heart. Mort Walker
Does it need to have a handle to be considered a mug? If not, this mug from Steve Woodhead Pottery in the UK is ideal for me and my big hands/big brushes. I have a few oldies for display, but when it comes to whipping up big lather, I have found nothing better.