I do not want real numbers at all, just an idea of how they would compare if going from scratch, installation wise. An idea of forced air being 1, staple-up being 1.5x, and radiant being 2x would help me get an idea of which system to think about. MD/DC/VA area.

Is staple-up radiant 2x the cost of forced air? Are radiators nore expensive than they're worth?

I'm just curious how it breaks down... forced air seems cheapest by far but I personally like radiators the best.