I would comment on what Harry said on only 2 things:
1- A brake only has to vent gases to be effective in reducing recoil, because most of the recoil comes from the gases in the barrel hitting the atmosphere. As long as you vent it into an expansion chamber, upward, or forward, it will reduce recoil a certain amount. However, if you want significant recoil reduction, it is best vented to the side or rear.
2- It seems to me that a lot of people who want to buy skill by buying good equipment, and others are doing a lot of things to rifles because "it looks cool". Not that we didn't do those kinds of things to rifles 10 or 20 years ago, it just didn't seem as prevalent.
That said, I agree with him on everything else in his post. Once you port a rifle, noise increases, sometimes to the point of being dangerous. Once you Magnaport a rifle, there is no taking it off. It will reduce recoil, but not a lot. If recoil bothers you, try a lighter caliber or a heavier gun. All my hunting rifles except one have 24" #4 profile barrels on them. That works better than a brake for recoil reduction.
There is a lot of very good advice here on TFL, and it is offered for free in order to help other shooters.