D -
There is a new version of VE Pro 5 just out, version 10309 that's supposed to fix most of the problems. You use a special Environment set up to get around the 16 instrument limit and give you control over volume (CC 7) of each. There's a file, VEP Multiport Layer.logic, that you get from VSL to set up the Environment.
VSL reports, however, that there is a problem in Logic in which notes are sometimes dropped, and there is nothing they can do about it. VSL says they have contacted Apple about it. The report on this remaining issue is contained in a sticky thread posted at the top of the Software forum: http://community.vsl.co.at/forums/t/31587.aspx. I'm hoping the problem isn't too bad, or Apple fixes it (good luck), as I do NOT want to learn another DAW. If Logic problems are serious and persist, I think VSL should advise us which of the DAWs out there, that can be used on an Apple Intel machine, have the fewest problems with VE Pro.
Not all good news, I'm afraid. Steve