stable version of active MQ

[Suchitha Koneru (sukoneru)]

Hello Active Mq Users, 
                        I am currently using active mq version 4.0.1.
Our application uses topic publishers and durable topic subscribers and
an embedded broker.  Our application will be ready for production in  a
month.
I would like to upgrade to a newer  stable version of active mq. Please
let me know, the version (4.1 or 4.2) , to which I can upgrade ?
 
thanks,
Suchitha.