[Raynor]

Well, Fingolfin is described as the "strongest, the most steadfast, and the most valiant". These two statements seem to go head to head, unless Tolkien was referring to Feanor's fire, when talking about his strength - and thus considering a spiritual potence, which might or might not translate into physical/combative aptitude, depending on how hot-headed he was at the moment. So, it may be that the answer is Feanor, if he keeps his cool, otherwise it's Fingolfin.