Newbie doubt

I came to this OGRE Add-ons forum because I am looking for explanation about Physics engine. I've already heard about ODE. But in this forum the most popular (or with more topics) is Newton.

Which is the advantages of Newton instead of others? Which are the downsides?

I used Ode before and later came to newton because it supported ConvexHulls out of the box.
I'm really satisfied with it,

my personal PROs:
Customizable Joints
Clear structure
Material System
actions performed in callbacks (you have to get used to it, but then you don't want to miss it)

CON's:
...