The fatip grande bites if i dont watch it. The futur will bite as well, more so while handling than shaving. But it will bite. I have a very sharp clauss straight that has a spike thatll get you as well.
My least forgiving also was a Parker razor. I PIFed it (with full disclosure), and unfortunately the new owner had the same issues with it. I got it for free from someone routinely using straights, and he as well thought that Parker was unusable ... so they must be something special (Or this particular Parker razor was faulty) Edit: not true, it was a Pearl OC. Sorry.
Mine is a Spike point Candidius 15/16 it got me 3 times already Only use that one on the Sunday morning if I am completly relaxed, I go a little sliwer then a round point with this on.
Interesting. I find my Red Tip to be effective, but not over-aggressive. May I ask what setting you use for your Slim?
Fendrihan Adventurer. Hybrid open comb/safety bar head. I mostly use just the SB side, but I find both sides equally harsh and aggressive.
The Gem OCMM is the most unforgiving razor in my collection. A wrong move and I'll get some irritation. Rarely use it anymore.
Feather Artist Club SS Kamisori. It can give a good shave, but it was a brutal learning curve. I always feel like I am riding the edge of disaster. Also, my Sally's Beauty Supply DE. The gap on it is huge. If I don't nail the angle just right, irritation abounds. It was my first DE, and it was a harsh taskmaster to learn on. Sent from my XT1585 using Tapatalk