Best drink with vodka is a Cape Cod. Vodka and Cranberry (fuck a lime).
Now...you can substitute cranberry for any cran mix (cran-apple, cran-grape, etc), but, throw a splash of OJ in that motherfucker and whoomp, there it is.
There's also the Greyhound, which is Grey Goose and grape fruit juice.
Fuck Brandy. Most of these Hennessey ghetto critters don't even know that Cognac is just Brandy from a particular part of France.
I just bought my brother in law some Osborne's Reserve (top notch Spanish Brandy) and the shit was only $50.
EDIT: didn't see you asking vodka AND brandy...as in both at the same time. In that case, I don't know why you would mix a dark and light liquor unless puking was your main objective.