PHP5 vs. CakePHP vs. RubyOnRails - Choose 1

OldJavaHack writes: If you could start a website (with MySQL for persistence) from scratch and you had a choice of PHP5, CakePHP, or RubyOnRails (RoR) — which would you choose and why?
Things to consider in your decision:

• 1. Maturity of solution
• 2. Features
• 3. Size of community of skilled users (to build a team)
• 4. Complexity/ease of use (for neophytes to master)
• 5. Greatest strength of your choice, and the greatest weakness for the other 2 non-choices.

Thanks for your feedback!
See comparison of capabilities here:
http://en.wikipedia.org/wiki/Comparison_of_web_app lication_frameworks