I know the G-Skill has better timings on it, but Corsair is a more trusted name, and its on sale for $20 cheaper.. which one should I get? The only bad thing about the Corsair is it said the RAM is rather big and might get in the way of an after marker CPU cooler.
Better safe than sorry regarding the CPU cooler and the RAM heatspreader so go with the G.Skill. It's still pretty good RAM so you're not selling yourself short.