>>381107949
At least warranty length cover years. Although, controllers last 9-15 months, (thumbstick wear), cables last 9-18 months (wear), Steam may cover first replacement out of warranty though. Base stations fail extremely rarely and steam is good with the rma on those . Headsets either come with issues or last a while; although they develop cracks in the strap part that I ended up fixing on mine before they propegated and broke; the part there is spring loaded. 

>>381109759
The only wmr worth considering is the G2, and you'll want to be getting index controllers and base stations anyway; so just get the index.