Lets see. Expensive, not fast enough to justify the price, doesn't look nearly as good as they would have you believe, and the 1600MHz modules are 1.65v. Overall I think it shouldn't sell at all but we all know some people will buy it. At least it has one thing going for it, low profile heat sinks shouldn't block any coolers not normally blocked by RAM without a hat sink.
But we can get much better RAM than this that also has such low profile heat sinks. G.Skill Sniper series has pretty small heat sinks and they look way better than these do. The 1866MHz 1.5v Snipers are awesome and about the same price as the 1600MHz HyperX's here and are well known for overclocking easily to 2133MHz.
Can't say I'd ever buy these. If I want red so much and can't find something else (G.Skill modules besides the Sniper series are generally red aren't they?) then I would rather go with a different look than get inferior modules. Granted I only have 1600MHz right now but I'll never buy 1333MHz modules and I'll never buy 1.65v modules and I'll never spend that much money for even better modules unless they are way better for their price (like those G.Skill 1866 modules, I'd get those if I had money for a new machine)