Default [Q] Warranty is up, time to unlock and install a custom rom+kernel. Suggestions?

I'm using stock .96 on my Xperia S, and I'm pretty satisfied with it. I installed the new Home and Walkman, rooted, and for me it's pretty much perfect already.

Since my warranty is up, I want to improve the phone to the max with a custom rom and kernel, but there are a lot of those on here, and I don't really have time to test them all.

Which one do you guys think is faster than stock and with more features and the least amount of bugs (or no bugs at all)?

Thanks in advance.