Overall, I dont, but the Faulks has killed tons of crow too. It just personal preference really. They are two totally different calls...and thats a good thing. Having a couple different calls with different tones and pitches keeps them from wising up as fast. And personally, I like using different calls, just because its fun, you can never have to many : )
Also, the mechanics of the call counts too. Calls like a Gibson have easy to remove toneboards that you can adjust the reed for a bit different pitch/tone, and also make it easy to clean. Calls like the Faulks or Mallardtone type, have toneboards that are basicly dowels inserted into a hole, and are pretty tight (especially a Faulks), and may get super tight if they swell up a little with moisture. If they clog up with saliva, or you want to adjust them, you may need to get a small 3/8 wood dowel,insert up thru the barrel and tap the mouthpieces out. A bit more inconvenient while hunting, but can be done pretty fast. Another reason to carry backup calls.
Also, Faulks calls are about 15 bucks, and a lot of guys dont buy something like a Gibson cause they think they are way more expensive...but if you look around, you can get a Gibson for around 27-28 bucks in certain places. Well worth it.
Just my opinions,
Mark