I had a set (bought them from Ben's cycle) on my fixed gear for about 6 months. Never had any problems with them. The black bladed spokes, black hubs, and somewhat deep black rims are a cool combo for a pretty decent price. Nothing too special but they stayed true for me (5'4" female though haha).

The only thing I did notice was that after a winter of riding (although I did clean the bike well from salt/grit) the rims showed a very fine crackling pattern, especially near the nipples. Hard to say if this was just the top finish layer, or if problematic deeper cracks in the actual rims would have developed later. Maybe someone else can chime in with regards to whether or not they noticed this on their Vuelta Pista wheelset.