I have been working on a game in Ogre for the last 6 months or so. It started as a learning project, and after a few rewrites it actually turned into a real game project. Physics scared me, and using Bullet with its lack of documentation was a nightmare, but I was able to atleast get some basics added and learned a lot. So as of now I am using Ogre with its default animation system (fairly basic) and Bullet Physics.

I had always wanted to use Havok when I started out, but due to lack of integration information on the Ogre forums, and lack of tutorials on the net, I decided against it. Now that I am actually at the point where Bullet is just too much of a headache to proceed with (staring at forum threads praying someone answers) and the Ogre animation system is so basic, I am considering switching to Havok for Physics and Animation.

The Physics system looks extremely polished and easy to use. The animation system looks incredible with the retargeting/blending/etc. The documentation is incredibly detailed as well (I guess when you come from Bullet, any documentation looks amazing)

So my question is, as I am still somewhat of a 'newbie' to game development, should I just stick with what I am using now or should I make the switch over to Havok? The physics looks like I could get my project back to where it is now with minimal effort, and be able to expand much faster. The animation aspect looks extremely daunting as far as integrating it with Ogre.