For what it's worth, we compared the DF50 against the competing series from JST (I think it was GH, but they all kind of blur together) and the JST parts were much easier to assemble than the Hirose. In general I have found JST products to be usually good choices, while I cannot say the same for Hirose. The JST catalog is my first point of call when new crimp wire-to-board connectors are required. Molex also makes some good options.