Best video format


Which is the best working video codec for nuendo 5.5.4 on Win7 x64.
It has been shoot on a Canon 5D in HD and edited on Final Cut Pro 7 on a Mac.

I used to use DV-pal for SD but for HD ? I also heard AppleProRes was working well on Macs with Nuendo.
But how does it behave in a windows based world ?

Thanks for your experienced suggestions folks,

Go with Avid DNxHD