I was just out at the range yesterday and I felt the little one port breaks on my buddy's 5.56 AR's blasted the shooter more than the heathen on my 308. It was also my friends daughter's first time shooting at distance and I really think the break helped this 70lb-at-most girl control the rifle and was almost immediately ringing steel consistently.
I personally only looked at self-timing breaks so I could remove it for hunting, which didn't happen last season, so my heathen has had ~600 rounds though it in the last year after being installed(almost to the day according to this thread). Hasn't moved, honestly hasn't really even gotten dirty. If I remember correctly it shifted my zero about a mil down so I would be curious to see if that stayed consistent after removal.
I honestly don't think you can go wrong with any of the breaks designed around precision shooting. I would really like to try the area 419 breaks but I've read they are similar to what I have.
Good luck I know this probably didn't help much