Following a couple of decades of small, incremental performance gains, the appearance in 2000 of the "eta" brought a sudden jump in performance and a further price escalation. This very expensive aircraft has up to now not had outstanding success in competition, but it for a while seemed to impact the cost of remaining competitive in the class. The 'eta biter' and its successor, the Concordia single-seater, as well as Walter Binder's EB28/EB29 until 2012 were being presented as challengers to eta, but the appearance and performance of shorter wingspan competitors in World Gliding Championships of 2012 may change established views on the design trends.