Definitely a good idea to go to your Toontrack account,and get the 64 bit installer,in fact it was "Bapu" who pointed this out to me about a year ago,so thanks,because,I could not get J-Bridge to work for me at all,and a real 64 bit version of EZ,is always going to be better than a bridged version.
That being said,I still use lots of 32 bit free/donation plugs,with Sonars bridge no problem.
Bob