I've been thinking of getting the So Dildo.
Also, I have the Ella and I wouldn't call it much of a double-ended dildo. Some people say in their reviews that they use the pointed end at the entrance of the vagina to warm up before using the other end, but when inserted (the whole point of double-ended dildos: double-insertion), it isn't very good and thrusting hurts, obviously. It's pointy. The Ella is a great dildo, though.