paper filters white or brown?

i like bleached.

unbleached typically leave me with an unpleasant aftertaste.

I can't tell the difference so usually get the cheapest.

The difference between white and brown filter papers?

Much the same as the difference between white and brown eggs - none!

I gave them up years ago and it's almost always a cafetiere, French Press. Far better coffee and I like the sludge...