OpenESB or Apache servicemix
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I'm am new in ESB, actually i'm entrant in this profession, and my first day immediatelly i get a very interesting question. OpenESB/GlassfishESB ( https://openesb-dev.org ) or Apache servicemix ( http://servicemix.apache.org/ ). Which and why we should use to develop ? 

Could you recommend me any link or share any experiences ? I have just read that Oracle - after bought Sun - doesn't support openesb any more, is it true ? 

Part of provider-consumer could be important. maybe some basic code could be useful. Which technology is better nowadays ? Thanks