Have you shot the Sparrow back to back against the Spectre? I've got a Spectre but have been intrigued by the design of the Sparrow.
Yes I have shot them side by side. The spectre is quieter. Quiet enough you can hear the difference.
The sparrow has a great design/idea. Depending on what you are going to pay for the spectre compared to the sparrow would determine which one I would buy.