Just thought I'd leave a little update here, as I finally got around to trying Tour M8 in 1.25 gauge. Since I tried 1.30 in a 2019 Prince Textreme Tour 100 310, I figured I'd try 1.25 in a 2019 TT100P (the 5g light, 18x20, more controlled brother to the 100 310), and it didn't disappoint. I strung it up at 48/46 lbs on my crank machine, so that would be like 46/44 or so on an eCP/dropweight. I played a session this morning in 45-55 degree weather, as was glad I strung it as low as I did (for the most part). Control was excellent, power was ample and launch angle just incredibly consistent. For certain flatter contact, it has a bit more spring and launch power than was ideal, so next time I might string it at 49/47. For all the attention that Paradox is getting for how forgiving yet playable it is, M8 is just as relevant for when you need a total beefy workhorse, one that also creates the most solid, unified feeling string bed I've ever experienced, from any string, co-poly or otherwise. If that's what you want/need for your setup, then you probably can't get any more solid than M8.
In case anyone's curious about the 2019 TT100P setup, the strung spec was 344g/31.2cm(~10pts HL)/328sw/20.7mgr/i, via 2g lead @ 1" up the handle, 6g @ 7" up the handle, 4g at 6 on the hoop, and a Volkl V-Dry over grip. Loved the weighting up this setup -- made for a flat OHBH'ers dream. Really enjoyed the overall solid, firmer, thuddy, Pro Staff -esque response of the 66RA 2019 Textreme Tour layup plus the solidness of M8.