Pretty much a matter of taste, other than the vented one is longer and slightly heavier, (if you need that, say with a 21 or 24 inch barrel), but noisier.
I put two of them on both 21 and 24 inch barrels. As well as one on a 26 incher. I wish the 26 was a 24, would be perfect.
The vents are no real advantage, well maybe for two reasons, one weight, (if you need more muzzle weight for swing purposes), and two, it might be easier to visually check for obstructions, say snow, etc.
Clyde
I put two of them on both 21 and 24 inch barrels. As well as one on a 26 incher. I wish the 26 was a 24, would be perfect.
The vents are no real advantage, well maybe for two reasons, one weight, (if you need more muzzle weight for swing purposes), and two, it might be easier to visually check for obstructions, say snow, etc.
Clyde