It will be easier for people to help if you edit your first post. First thing to do is fix the links so they work. People will be more helpful if you make it easier on them to see the RAM you are asking about. Then provide some additional information. Questions to answer: What are you going to be using this machine for? What are the other components you've picked out - in particular motherboard and CPU? Do you plan on overclocking and are you comfortable playing around in the BIOS?
The differences between each step up in RAM is often marginally noticeable, and outside of a benchmark it is difficult to say whether or not you would even notice the difference. And yet the cost difference adds up fast. The best RAM advice I got from these forums was buy the best RAM that fits your budget, if you find yourself stretching things just to get 'better' RAM that's probably money better spent on other components.
Motherboard: ASUS Maximus III Formula
Video: EVGA GeForce GTX 260
The computer in question will mostly be used for multi-tasking; I might get into gaming since I will probably have adequate equipment to do so.
I do plan on overclocking and will be comfortable using the BIOS.
Both sets of RAM cost the same, so with that variable out of the question, which would be the better buy? Lower clock timings or higher speed? Has anyone had experience overclocking either of these sets of RAM? Which one overclocks easier? Etc.
I have not yet read the articles; I just wanted to get a reply out. I will edit this post with any additional information once I have read the articles.