Just picked one up to give to my dad for christmas. I have been testing it out this week and I am really enjoying the shaves I am getting from it. I might have to find another one for myself.
I've been giving my Red Tip a chance every so often in hopes I finally find the correct blade/angle to turn it into the uberperformer it's meant to be. Honestly, though, compared to my SEs (1912, G-Bar, Featherweight, even the Schick G injector), all of my DEs give me poorer shaves that take more time with more irritation.
That includes:
40s black tip SS
50s red tip SS
Vintage "Chessman" Merkur Slant
Merkur HD
It must be something I'm doing unright, or something uncommonly right about SEs for my face/beard. Strange.