Although I'm a complete noob with pcs, I know very well to mess with ISOs because it's needed to play stuff from another place, which until very recently was what I thought to be the only place where you could download a bunch of VNs.
I couldn't care less about ISO or pre-installed stuff, but I do prefer that my download comes in a torrent, as I can't stand downloading 50 different parts for games like School Days, for
example.
As long as it's a torrent, I have no complaints about it.