I am very impressed by the Treet Platinum and find them the perfect balance of efficiency with smoothness. I also enjoy the Treet Dura Sharp and black beauty carbon blades but for different reasons.
My beard is wiry-course and I have sensitive skin, plus I'm a daily shaver. The Treet Platinum seems to last long, but I'm not one to test longevity since the price is right and I enjoy a fresh blade.
If you like a Personna Blue or Gillette Yellow or Green Russian I think you'll find this blade to fit in that range of sharpness and provide excellent smoothness.
Hope this helps... give them a try!