Just my take...
I found that the Feather DE and SE Valet type special blades are a bit flexible. Therefore I found them to work best in a razor with good tight blade "lockdown," and medium blade exposure. A good solid dial Gillette will allow you to play with blade exposure.
As always,, watch your blade angle, as a really sharp or flexible blade will scrape if the angle is just a little bit off.
Enjoy the journey, you have plenty of blades to experiment with.
~Richard