This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
I believe that the current Tomcat 5.5.9 is stable and faster than previous versions. It is certainly working well for me. By going with the latest servlet API you gain a little protection from the update cycle Probably the biggest performance problem will be in YOUR code, not the Tomcat code. Bill