I really don’t have “That” much knowledge or experience with muzzlebreaks. What I can say is that the TC break makes the 270 feel like a 243. I really like mine. I know that the other breaks mentioned are better. I just happen to find mine in the clearance section of the custom shop.
Ps, I ran over 30 handloads threw my 270 Win shortgun barrel. If you are going to handload I might be able to help a little.
Bottom one in picture