Rating software

Quickie: Looking to do a quarterly software review section for a local magazine. I have some ideas/criteria in mind, but would like a consensus.

What criteria/areas would be best to rate software. I’m planning to develop a standard set of factors, so that all software will be judged on the same scale, and there can be no interpretation of bias.

In mind:
1. Ease of use
2. Memory/Resource consumption
3. Accomplishment of purpose (does it really do what it’s suppose to???)
4. Interface
5. Price
6. Stability (may fall under resource consumption above)
7. Compatibility (Linux/Mac/Win2k/WinXP)

Whay say u?