The edges on razor blades are very shallow. That's why they're so sharp... and why the edge is so short-lived. Some people try to sharpen or strop them. It's not worth the effort in my mind since they cost pennies-a-piece. They're also very small and double-edged. Even one that is dull for shaving is still wicked-sharp and will cut a finger badly, so I don't think that it's worth the risk handling them.
You probably just need to try a few different brands. As you explore blades, keep in mind that you need to shave with a brand for at least ten times, I think, before reaching any judgement. Also, keep in mind that even the best brands have the occasional defect, less than perfect edge.
I have also found that when a blade seems to not be very good, I can sometimes stop, rinse off the razor, open the razor using a towel, and then flip the blade over and reassemble. Sometimes just reseating the blade or flipping it over seems to do the trick. This is another advantage over cartridges. Carts also have their defects and when you get a bad one, all you can do is throw it away... which can cost several dollars for some of these new many-bladed contraptions.
Anyway, I'm delighted that you love the Futur. It's what I use and I will echo your conclusion, "I am freaking LOVING this razor." Mine is four years old now and looks exactly like the day I bought it. It's expensive as razors go, but I think it's a good value.
A couple of times per year, I take a worn-out toothbrush I'm about to discard, apply a dab of liquid hand soap, and quickly brush out my Futur. The whole cleaning takes maybe a minute. That's all the "maintenance" I do on it.