I spotted a glaring error in this comment, that I feel needs to be corrected. David Venditto contacted me to let me know that the Infinity blades are not made in Japan as I had originally commented. They're designed in the USA and manufactured in Italy. Also worth mentioning is that Infinity was not among the list of blades that I originally compared. Since this original compilation of blades, I've had the chance to experiment with some Infinity blades and have found all that I've used to be top shelf quality and performance, with an impeccable fit and finish. If you're not familiar with the history of Infinity, it was started by David Venditto, the son of the legendary Carlo Venditto of Freud USA, CMT USA, and Jesada.
Also worth noting is that the DW7657 is no longer made in England, and is now sold as an American made Delta Industrial 35-7657, available dirt cheap at closeout prices for ~ $30 shipped.