If you are interested, Hardware Canucks did a review for V2 and this:
http://www.hardwarecanucks.com/forum...et-review.html
http://www.hardwarecanucks.com/forum...et-review.html
It appears that the CM Storm Sirius is no good for music but very good for gaming, while the V2 is more "balanced".
You might also want to take a look at modding the PC350 should you get it. Can't find the exact thread, but it should be in head-fi.org