How do you guys handle rendering?

Does flash allow the bitmap draw method to be used in anyway to the main stage buffer? In AS2 I just rendered to a bitmap that was as large as my game view. I’ve been doing the same practice in AS3. It tends to lower my fps by around 6, I believe, which is kind of annoying.

I was just doing a test a few weeks ago to check whether my rendering system was slow.
Clicky
(Click around slowly, hold space to stop rendering).

Every click creates 500 particles and each image is a different size. I use spatial partitioning in my game engine, so I’m not worried too much about what I’m rendering as I cull everything fairly well.

However, I am wondering how I should be rendering. What’s the fastest methods you guys have used. I’ve been rather busy lately so I’ve only learned a little of AS3. Is there some fast way to render bitmaps to the stage rather than using an extra buffer? Also you might not be able to tell, but my buffer is getting a little tearing sometimes near 30 fps. Not annoying, but might not look very professional.

Off-Topic:

Oh yeah, and something I noticed. Why does flash insist on anti-aliasing bitmap images when flash is set to high quality. I always use low quality since anti-aliasing doesn’t change the look of the bitmap when it’s not rotated. I thought Adobe would have fixed that. Or I could be mistaken and it does do something I’m not aware of. Any clarification on this?