VIST bindings are excellent, very well made and reliable. They now make a 10-18 for racing. I would recommend the Race Plate and 8-16 or 10-18 binding.
I have VIST plates and 6-14 bindings on all my Stockli Skis.http://www.vist.it/
The Stockli importer here in NZ is continuing to fit VIST plates and binding s to Stockli skis despite their recent association with Salomon. The VIST system is too well made and reliable.
That said any of the proper race shop bindings (ie made of metal rather than plastic) will work well. Marker or Tyrolia if you are finding it difficult to get VIST.
Lou will be able to tell you why VIST are so high quality and it would be worth giving him a call.