To cut the flower spike or not?

[jmain3]

Happy Sunday to everyone! I just got done repotting the two large phal orchids and it was great fun. I'm now wondering on to cut the flower spike on each or not. Both have lost all their flowers, that's how I got them on clearance for just 2.00 a piece. I've read many different opinions on how to.. But, wanted to include pictures of my own to see what you guys think. The first two images are of the first orchid.. Second two images are of the second orchid. Since these are larger than the other orchids I own.. Is it best to cut about 1/2-3/4 down or above the second node? I thank you all for your insight!