Upgrading form mysql 5.0.90 to 5.5 or 5.6

[Mike Franon]

I have 1 master with many slaves, using the master only for inserts
and the rest are readers.


Is 5.6 stable?  Or better off to go to 5.5?

If so do I need to make a few steps or can go straight from 5.0 to 5.6?


Any best practices and recommendations?

Thanks