I have read a lot about the illegal silicone practices I even read of a girl using hardware store grade silicone to 'pump' herself up... not sure if its the same in the US but here it would be similiar to polyfiller or the stuff you use to seal your bathtub or windows i mean this stuff is dangerous if ingested or put inside someone.

As for ass I mean I'm all for a big ass dont get me wrong but some girls can go too far and it kinda defeats the point.

Luxury, I'd say your pretty much perfect the way you are... a cheap comment some might say but I'm not shitting you when i say so