Since linear scoring is bad, how about a logarithmic one:
10 dB: This is the best of the best. Nothing can beat this.
8 dB: This is very good!
6 dB: That’s nice.
5 dB: Eh, it’s fine.
4 dB: It’s a bit lacking.
3 dB: You need to do better than this.
0 dB: Bleh.
-Infinity dB: This is the worst thing I’ve ever seen in my life.
You forgor one