Any good new car deals on Memorial day?

I need to buy a car, but don't know much about cars.

Checked edmunds. Looks like actual pricing is like 10% below invoice price for certain cars (such as Lexus), and higher than invoice for other brands (such as BMW).

In this economy, things are changing fast. Any info on good deals are greatly appreciated.

Primary driver is a mommy with 2 kids (under 10 yrs old). not a crazy driver in any way, but like good accerlation when changing lanes. Other than that, safety and reliability is major concern.

thanks for any input.