I was a participant in the TW playtest and this became my go-to string based on my experiences. I still have some slight misgivings about going to this string. At age 57, I had hoped to continue to play with a full bed of lower powered poly strings for as long as I could, then move towards more powerful setups as I age further and lose racquet head speed. But the S7T string gives me so much more pop for a relatively low loss of control, and does everything else as well as any low powered poly, that I just can't not use it. The pop and control I get when really flattening out a shot is incredible. There's a lot of ball speed but without any of the "hot spot" feeling.
I strung at 51/46. The string felt relatively insensitive to tension loss as far as ball response, and went 15 hours for me without breaking and while retaining a large percentage of its initial playability. I don't see needing to change the tension any. This next time will only be the second stringing with the S7T, and if it feels the same, I'm going to buy out the entire TW stock of reels.
Really looking forward to hearing your impressions!