Which Review Scale is Better 'Out of 5' or 'Out of 10'

[njiska]

A simple question, which review system is better for games?

Something out of 5 or Something out of 10.

I tend to think 'Out of 5' works better because it's more informative.

5 - Great
4 - Above Average
3 - Average
2- Below Average
1 - Crap

Afterall who looks at a game below 5 on an 'Out of 10' scale?