the only difference between the 4 is the memory timings
$144 g skill, 9-9-9-24
$159 g skill, 8-8-8-21
$169 g skill, 7-8-7-24-2N
$169 corsair, 8-8-8-24
I'm not very knowledgeable about what makes faster memory and I'm assuming that the lower the number the better, but would I see a significant performance difference between the cheapest and most expensive set mentioned?
Timings don't make a difference in games/apps,they are mainly important for OC'ng,so if you aren't going to OC,then go with the cheapest option,otherwise the third choice has the lowest timing which is better for overclocking