COD with TS today. I was considering btw CM Storm QF Ultimate MX Blue or Razer BWU. Got a chance to test both out before buy, made a decision to get CM Storm QF Ultimate MX Blue! My first MKB tbh. IMHO, the quality is superb! The sound of mx blue is just, man, you gotta own one first! EARGASMS! Even much better than Razer BWU. It's kinda solid sound and I love it. Comes with 2 years warranty which is very good. Recommended seller after all. Thanks for the great service TS! Patiently explain to me what's the diff btw this model and that model. GL in your sales!