Is that just ONE Favorite ?
I have several. Starting with revolvers, there is this 1st day of production Model 649 that was embellished by the Factory to commemorate the introduction of the first stainless BodyGuard in 1985. 25 revolvers were hand selected to be engraved.
This Deluxe Texas Sesquicentennial Commemorative Model 544 is one of the coolest looking commemorative packages that I have seen. The Texas Longhorn is serial numbered to the revolver and the grips are hand scrimshawed African Elephant Ivory
My L-Comp is absolutely one of my favorite concealed carry revolvers. Seven rounds of 357 Magnum in a snub nose revolver . . . what is not to love
The Factory did a very small run of two tone Model 327 TRR8s back in 2008. Not only is this a terrific looking revolver it also happens to be one of the most accurate 357 Magnums that I have ever fired. That accuracy can be attributed to the multi piece tension barrel that is reminiscent of the Dan Wesson revolvers that were so popular during the Metallic Silhouette days of YesterYear
As far as I am concerned the sexiest auto loader that I have ever seen come out of Smith and Wesson is the Model 3566 Limited
While I love the 3566 Limited as it was originally created, I am very fortunate to own the only Model 3566 Limited that the factory ever created with two different top ends, one for 356 TSW and the other for 40 S&W. Additionally it has a 9MM barrel fitted from the performance center. So this one is set up to fire three different cartridges
All of that being said what is quite possibly my favorite Smith and Wesson is a very early 4" Model 66 that used to belong to Smith and Wesson's Chief Metallurgist. The cool thing about this revolver is that when I acquired it from him it had a clear lexan side plate so that you could see what was going on inside the revolver. I use this when teaching firearm safety courses to show the lockwork