I was searching a Trigger to midi, via usb, interface for my drummer drumset, which we triggered. At first we've had lot of troubles getting the stuff to respond properly, we were getting lots of double hits and inconsistent velocity, but then I've studied the manual enough to understand every function of this interface and finally I've reached a satisfying setup, no more double hits and definitely a more precise response.
Anyway the interface is not a ready to use piece, You have to study the manual and do lots of tests in order to set it properly. Hardware wise, besides the buttons, which are not the best (lots of twisting if not pushed in the center, still they don't produce a satisfying click) the interface is sturdy and the aluminum case feels well made.
The downside is that the interface has no 19" rack wings, so if You want to install it in a rack you better be creative.