So ive had the Sibeia v2's for a few weeks now and i must say its awesome.
The Pros
Very comfortable and the over all design is great. very light unlike most good headsets that are really heavy. The sound so really good and the retractable microphone is a great addition if you want to use the headset for your ipod. Ive used it for both Online and LAN play and it really blocks out all outside noise very well.
The Cons
Ive noticed after 3-4 hours of continues play that the tops of my ears start to hurt a bit and im forced to ake a 10 minute break, Im pretty sure this issue to the fact that the foam just is not thick enough but can be fixed by adjusting the headset.
The mic is a little scratchy for 5-10 mins after you plug it back into the headset. Not sure if this is just my pair or if they all do it but it can be annoying for others on vent.
Other then that its great headset, 5 out of 5 for sure. If your looking to get a new headset then i recommend the V2's