I've got two Voyagers among my very large Cold Steel collection. I almost always have a Cold Steel piece being shipped to me at any given time. My favorite company, absolutely, with Spyderco close behind. Cold Steel makes very reliable, high-value knives with excellent fit & finish and good materials. Blades are generally evenly ground and the knives are well-designed. I don't have anything bad to say about Cold Steel. I am also a fan of their marketing videos, which set them apart in ways that are, in my opinion, positive.
I think the only knock you can really give Cold Steel is that they use AUS-8A as their primary steel, but I think this is a complaint exclusive to hardcore knife enthusiasts. I honestly don't think most knife users care. It's actually my favorite knife steel so far because of how easy it is to put a screaming sharp edge on it, and it lasts long enough if the steel is properly heat treated (and with Cold Steel, it is). It's just a good all-around steel that delivers excellent bang for your buck and doesn't suck at anything.