I agree that the .30-06 is a do-it-all cartridge, at least in North America.

I use a Remington 700 ADL, which performs as well as I would want it to. I'm using a Leupold Rifleman 3-9x40 scope, which is pretty basic, but again it does what I want. And Leupold makes excellent optics, whether it's a $200 scope or a $400 one.