I will say this: I will never buy a headset that doesn't mimic the Siberia's design. Regular headphones with the hard band are awful, but the Siberias are the only ones I have ever been able to wear for a significant (indefinite) amount of time without major discomfort.
The headband concept they have is fantastic. I'm currently rolling an Arctis, but my only gripe with that one is that it is not tight laterally, so it sort of slips around. Still great for comfort though.
As far as warranty goes, usually 1 year, but honestly, I still have my Siberia black/gold I picked up several years ago. The paint job has seen better days, but it still works just as well as day one.
I'll give SS due credit - their headsets are well designed and generally priced to their capabilities. The Siberia V2 will always hold a place in my heart and I still consider it the best headset (having made use of such things for over a decade) I have ever owned. Pity they downgraded the audio/mic on the rehash v3, but the 200s are still pretty similar IIRC.