I really like Vengeance Falls. I think Trivium's real fault if they have one is they take themselves dead seriously a lot of the time. Vengeance Falls is just something that Trivium sometimes aren't, it's fun. It's a good album if you're working out, it's high energy, catchy, it's one of their more instantly accessible albums. I think putting something like Supercharger by Machine Head or hell even the Crusade which you mentioned would be much better. Vengeance Falls isn't even as boring as Silence In The Snow which is so bland fans forget about it entirely.