solidad's Recent Posts
There's also Vienna Ensemble Pro, although it's not cheap. I haven't used it, but I hear good things. http://www.vsl.co.at/en/211/497/1685/1990/1680.htm If I recall, it's PT 10 but not PT 11 compatible, but that may have changed to include PT 11 as well.
Here's an article from the Pro Tools Expert blog that covers additional options: http://www.pro-tools-expert.com/home-page/2013/7/10/7-ways-to-host-vst-or-au-plug-ins-in-pro-tools-11-and-earlie.html
Good luck!