Both are polyester strings (which I like) and both are black (which I also like), Both are easy to string, not a lot of coil memory, very similar to other twisted polyester strings in the way they play and the tension stability is good.
Both strings were fitted to my spare PowerAngle rackets, I have three rackets, I can test the strings and compare them with my favorite MSV Hepta twist. (All strings are at 54Ibs)
The only difference so far is that the Triangle Twisted v's the Square Twisted is that the Triangle has more "bite and more pop on the volleys"
I have used both test strings now for 17 hrs and they are still ok the edges are starting to fade and are starting to look like normal untwisted strings but still playing well.
Bottom line would I use these strings ? Yes
Do they offer more than my MSV Hepta ? No
Out of the Two test strings which do I prefer? The Triangle Twisted because it has more pop, more bite and a small amount more control and feel.
When I get to know what these strings are I will update this thread.