I went to an open house/mini trade show at Cleveland Tool and Cutter today and got to talking to the Grass rep about their Dynapro 16 series undermount slides. They seem to have a number of improvements compared to the Blum undermounts, at least according to the rep. Heavier gauge metal, covered soft close mechanism so no visible springs or chance for "stuff" to fall into the mechanism, front roller farther forward on the bottom of the slide to minimize sag, more positive engagement and more adjustment range. And the pricing seems better too (although the price sheet says limited time pricing). They use the same notching and hole layout as Blum (the rep claims Blum adopted Grass' standard, FWIW).

Anybody out there using them and if so, what do you think of them?