I decided to post an update on the Matrix 90# X 75' line set since I got a good session in using them a while back with several of my kites.
I used them for an hour or two in about 6 or 7 mph wind. My first impression of them was correct, I like my skybond 100# x 85' lines way better than the matrix lines. To me, the skybond lines have a more connected wired feel to them, and seem more responsive.
I couldn't tell if the matrix lines were stretching more than the skybond lines or not, or if that had anything to do with the feel or not. The Skybond line set is 10' longer than than the Matrix, and 10# higher rating.
The matrix lines seem like they are in between a standard spectra and a skybond line. Not as stiff as the skybond, but they do seem to have some type of coating on them. I like the more wired feel to the skybond lines and don't really care for the softer line feel of the spectra lines anymore.
I don't find the orange color of the Matrix lines to be any more visible on the ground or the sky.
Getting an accurate measurement of the lines using digital calipers isn't perfect since it tends to compress the line while trying to get a measurement. Taking multiple measurements, they look about the same, around .0190 in, or about .45 mm in diameter.
In summary, I don't see myself buying any more Matrix lines for my own use, but I do see some applications for them. They are a decent value and seem to be a decent line set so far, and are probably a good option for someone who bought a cheaper production kite that came with a poor quality line set. Also they are good to have around for other people to try out for comparison. Or a good line set for a thrashing on.
I am going to get some LPG line sets next even though they are said to pick up more debris in the sand than the skybond, and have less stretch than the skybond, I will have to see for myself.