Has anyone compared the Totem Forest to the Forest Signature?

I have the Totem Forest and have been considering a Forest Signature. I have not been able to demo a Signature anywhere, however. Is there anyone who can give me some advice as to if this is a worthwhile upgrade? I really like the Forest, but would love a little more clarity and detail. Currently I am powering them with a Hegel h160. Thanks for your help.