No doubt the Koger sun shade works well...but...
This morning I took off at 4:52am. I headed east, and the sunrise was pretty much directly ahead of me. For the first 20 minutes or so, my left hand was my sun shade.
As the sun got higher in the sky, since I was using the suction cup stick-up shades, I was able to put them pretty far forward on my tip-up canopy. They blocked the sun nicely. The Koger sun shade definitely wouldn't have been able to extend that far forward -- wouldn't have done diddly this morning!
This afternoon as I flew a heading of 070 in the late afternoon, the sun was to my left rear. I was able to stick the suction cup stick-up shades biased to the left side and it did what I needed it to.
Just advocating cheap & functional. It works where you need it to.