Out of the options posted only Zachary Quinto has the right facial features of angles and planes. 
I'm somewhat in the Fillion camp, but I will say right off that it's not about his features at all. Though I still think his features could work for Harry, it's about other things, like his half-smirk. Every time I read something about Harry snorting and delivering a smart-ass line to a bad guy, I imagine that smirk, and the tone of voice that goes with it. Other little things to do with tone or delivery, too. Like for example, when Harry wakes up from being knocked out and says, "The kid knows what she's talking about. ... What are we talking about?" I hear Nathan Fillion, in the same tone as his "What happened about me?" line from Firefly. When Harry gets really brutal, efficient, and dangerous, I see the look on Fillion/Mal's face when he put a bullet in someone who was threatening a young woman, or slapped a torture device on the guy who had been torturing him. When there are quiet, serious moments in the books, I hear Fillion's quiet and serious voice. So no, I don't think he looks exactly as Harry is described in terms of angular features (for that look, my vision is of David Tennant) but I can still see Fillion as Dresden, because it's his voice and his expression that pops into my head so very often when reading the books.
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