different dual channel ram

Hey, I've currently got a G. skill 1x8Gb Ripjaws V 2400mhz CL15 overclocked at 3000Mhz CL16 at 1.25V. I'm currently getting a good deal on a 2 Years Old USED Corsair Vengeance LPX 1x8GB 2400Mhz Probably CL16 (where as G.skill is CL15 at default). Should I get it or is it worth to spend more to...