I dicovered that all my paper is VC - except some packs that must be at least 10 years old. Not by choise, but because it's what's available locally. The only graded paper that's easy to find round here is Emaks, which responds really, really weirdly to toning (e.g. goes a rather nasty greenish-red in Viradon).

I don't prefer VC, I don't need it. But I use it because it's what I have. About 95% of all my prints are made on grade 2 (no filter) anyway.