I’m currently using all the latest reformulated strings...to achieve a similar “tension feel,” I use 45-130 Black and Blue rounds, and 40-125 Blue flats.
That said...the Black rounds have more tension than the Blue rounds, but not enough difference to make me want 40-125’s.
The reformulated Blue flats have slightly more tension than the prior Blue flats...but still waaay less tension than the discontinued Black flats.
I must say...I really, really LOVE the reformulated Blue Flats! Strong fundamental, same great feel, much more consistent string to string, and the slightly higher tension...were some nice improvements!
(Btw, I’m also finding the new Black rounds hold up a long time...

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