collidable polygon list in a partition, what's faster?

hi,

i'm workin on a car game with havok but i want perfect car
control.

so i only use havok for car cockpits

the hart of my car is a point i control by myself, i only
use havok for the cockpit, linked by a dashpot (and a
lingo-made reciproc) to the center.

Cockpit box doesn't collide floor, i use my own collision
routine (four spheres)


I need to store polygon in a space partition so my spheres
test few polygon lists

Should i use an octree-grid or bsp tree?
Which is faster?

octree seems to remove less unuseful polygons so bsp should
be faster but i'm not sure

I show a few octree and bsp collision demos in shockwave, i
didn't notice a big difference



Did someone compare both ?

             
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