Has anyone ever installed an exhaust whistle from Bratton's or Snyder's?

[smittykid]

I'm looking at the exhaust whistles from Bratton's and Snyder's. Big difference in price-Brattons' $145/Snyder's $225 + adapter. It looks like the one from Bratton's fits on the tip of the exhaust pipe and the one from Snyder's (similar to an Aermore) mounts near the exhaust manifold.
I was wondering who out there may enlighten me on the performance of one or the other. I don't mind spending the extra bucks if it's going to be a much better preforming whistle. Thanks, Smitty