My opinion only, but I have had both, the SAK is the 'best', the Parker Hale is fine in terms of it being a 'silencer' but it's too long
and too heavy when compared to the SAK, you can get both in black or silver, both are strippable, but the SAK is just that little bit better
in all departments.
Also I had a 17 Whisper on a 17HMR I had, but they make it for .22 also, this was was a superb bit of kit, BUT it was £125.00 and it was NOT
better than the SAK in relation to it's function as a 'silencer'. So if you've got £125.00 to spend and you like quality then the Whisper is the
best,