iF YOU DO A LOT OF 2D , you really need something like the new Matrox cards, or a card based on the new Nvidia TnT chipset(Diamond Viper550, STB Velocity 4400)
Or maybe even the ne Voodoo Banshee. All are fast gaming cards, and have excellent 2d.
I would definitely NOT go with the Voodoo Rush. The 2d is ok at best, and the 3d ,when it works, is outdated. I bought on, and returned it within 2 days. For lunch today, I'm going to buy the STB Velocity 4400.