Every species is cool in their own way so I can't say a best. Unique setups, does well in groups, manageable size, mid-range price, and ease of care makes Pancakes my most underrated.
Today's base was sedum, gongura, narrow leaf plantain, broadleaf plantain, dandelion greens, rose of sharon leaves and flowers, petunias, and white clover topped with Tortoise Supply's herbal hay. Fescue and African variegated grasses were added for stars and pancakes. Red pear, prickly pear...
I started with a base of gongura, narrow leaf plantain, broadleaf plantain, begonias, hibiscus, pumpkin and sweet potato leaves with dried moringa and stinging nettles. Okra, couch grass, and oat grass were added for the pancakes and stars. Ground up raw papaya, white mushrooms, okra and yam...
Tortoise table lists as a do not feed due to oxalates and saponins. It seems that many people feed plants with oxalates and there seems to be doubt as to the harmfulness of saponins to tortoises. According to wikipedia some saponins can aid in animal digestion and enhance nutrient absorption...
I'd hate to see tortoises go the way of the bearded dragon or various geckos where it seems like with all the fancy morphs you just don't see many normals.
I'd be upset to receive a tortoise with any imperfections without knowing ahead of time but can't imagine waiting a month to bring it to the seller's attention. I do believe your offer of a replacement makes it right.