Same here as what that guy posted.
On my car I saw no change in 60 ft at all. I saw no change at all in ET or MPH. I had a set of each, so I could and did swap back and forth.
I do think the stiff sidewalls are a little more stable up over 120. Not much better, but maybe a little bit. That may be entirely in my head, but they seemed a tad less squirmy. Either one was stable enough, however.
I really think you could run either one.