My opinion is that if you want the recoil reduction provided by brake or porting, go with the brake. For one thing, opinions vary as to the effectiveness of porting, but a good brake WILL reduce recoil very significantly on a .375.

Then there is resale.

A brake can be removed and the threads covered with a cap which can be made to blend quite nicely with the barrel for those who might not want the brake. A ported barrel can't be hidden and in my experience alot of people found a ported barrel undesireable on a used gun.

Maybe things have changed and maybe the ported barrels are just fine for resale now. I'm not trying to be dogmatic about this, but rather just giving you another thing to mull over.

Zimhunter, you must have posted right before me. Interesting you had a good experience with the porting. When I was selling guns in Michigan, lots of fellows had Larry Kelly port their guns and we got a lot of varied responses about the success of the job. I personally have never shot a ported gun that I can remember.