Hi and thanks for asking. TBH, I really love shaving with this razor. I have only use the Feather Proguard blades so far as it is the cheapest I could find locally. Each and every shave is effortlessly easy and silky smooth (probably because of the blade). The angle is easy to find (mostly shallow). I have more than 35 razors (vintage and modern) and none were able to provide me with a shave so efficient...unless I push it and will surely result in irritation or weepers. This razor can maneuver so easily around and especially under the nose and any curvature. My usual problem areas are the adam apple and under both jawlines. I am amazed how easily this razor removes the hairs there...
I have long admired and desire the Vector but that razor is just way beyond what I can afford (even the RR Hawk). OTOH, both these AC razors ( I have both brass and aluminum) comes to me at only USD16 and the most expensive thing is the blades...
I really resisted the urge to use both every day...
they're so good. I reminded myself I have to use DE razors more because of the cost of the blades...
I read somewhere that all these 3 are rare to be found in just 1 razor, Smoothness, Comfort, and Efficiency but I found mine...YMMV of course