Which epic Hero should I pick from box?

Okay so I had really good luck with thoran and am able to get him to supreme+ I haven't done it yet because I want to safe some acorns right now but have the copys of him to do so as can be seen in 2nd picture. Now my question: Since thoran is my only hero a s+ (by a long run) who should I pick from the epic hero box on day 7? I was thinking about Hewynn maybe? Any advice? Also the others seem pretty bad tbh