I currently have 2x4GB Gskill Ripjaw 1333. I bought 16 more GB or Ram 2x8gb Gskill Ares and they seem to work together ok even though they are different capacities. They have the same frequency and timings so I thought it would be ok and they seem to get along. However one stick was bad so I'm exchanging it on NewEgg and I found out I could have got 16GB Gskill Ares 2400 CAS 11 instead of 1333 CAS 9. I am a sound engineer and use memory intensive programs where latency and memory speed is crucial. Should I again get the 2x8GB 1333 so I will have 24GB or ram or upgrade to the higher frequency of 2400 and go with just the 2 sticks for 16GB. Any thoughts?