Taurus makes .357 magnums without the porting.
check out the Model 66. 4" barrel, 7 round cylinder. Its one of their medium frame series. There is also the Model 65, they have both in stainless and black.
You will get less muzzle flash out of a longer barrel. .357 magnum at night is going to spit fire at night ported or not.
I do own a tracker by the way but its the smallest caliber tracker in .17 HMR. I found the ribber grips that come on the tracker series less than great and I replaced them. The grips on their medium frames seem a lot better than the ribber grips.