In addition to Proraso Single Blade, you might want to consider the new Proraso Super Formula, which is every bit as good, and slightly less expensive.
(If you like DRH, in all probability you'd also like some of the other English classics: T&H, GFT.)
(If you like DRH, in all probability you'd also like some of the other English classics: T&H, GFT.)