For a monitor, considering how close you sit to them, 32" is a bit big for me. 27" is pushing it. But to each his own I suppose.
I've no suggestions on which of the Korean monitors to go for, it's nothing I've looked in to yet. But I know OCN get loads of topics about them, just use the search and search Korean. A tonne of topics will come up I'd imagine.
I don't believe you can get 120Hz 1440p monitors yet, someone correct me if I'm wrong there. I believe it'll be one or the other.