Default [Q] CM9, CM10 or CM11. What do you think? ;)

Hey all,

I have a XPERIA sola and I'm running it nearly everytime on CM. But which one do you recommend?

Here's my opinion:
- CM9 (good balance between performance and battery, but too old Android)
- CM10 (Newer Android but ****ty battery life)
- CM11 (what about this? I just tried Carbon yet and battery + performance is not that good. UI is smooth but RAM is bad)

So can you share your experince with CM ROM's too?
Devices:

- Sony XPERIA Sola

- Sony Ericsson XPERIA Ray

- LG GT540

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