What makes the Red IP Blades better suited? I have only used Feather and Bic Chrome Platinums. Mainly because I was well stocked in both, but ready to buy again.
Blades, just as razors, are a very personal choice. Some work for people, some don't work at all for others.
I just found the combo Futur + Red Personna blades to be the best for me. For example you mentioned the two blades that i think are the most overrated blades in bladeland. I can't stand BIC blades (they shred my neck to pieces) and found feathers simply overrated and too expensive for what they are.