I was going to get a Beretta 92FS (and I might still!) because that was (until Chief Bratton) the issued EDC sidearm of the LAPD, which I was trying to join over a decade ago. I liked the way it felt in my hand when I got a chance to hold one back then, and I figured that it was the Right balance of reliable performance and cost. They were kind of long, which at the time, I didn't appreciate. Also, I was of the opinion that if I wanted to carry for SD, I should consider a semiautomatic that chambers a .40 caliber round. Then, I discovered the CHP carried S&W 4006s, and for years, I wanted one.
Then it fell off the freakin' California roster by the time I started looking again. The only two semi-autos they sell here now are the shield and the SD (replacement Sigma). By this point, I was so in love with the idea of owning a shorter (but still good-sized) semiautomatic made by Smith & Wesson that I decided the SD40VE would be the one. I hadn't realized how much like a Glock the Sigma/SD line was trying to be because I hadn't realized how much they'd changed the gun market with proving Polymer guns can work. The biggest PD in the US (NYPD) started carrying them and when their chief (Bratton) came to LA, he opened up the opportunity for the officers here to carry those if they wanted.
The reviews were outstanding on the SD and most importantly, the price point made it affordable. Had the 92FS not cost as much as it did, I'd have bought it a decade ago, but the SD finally put a semiauto within reach. It was only a bonus that everywhere I went online, people were saying how much better they liked it than a Glock. I personally find it more visually pleasing and the grip angle on the SD is much more natural for me than the Glock. I also prefer 3-dot sights to the football goal sight picture.
In hindsight, I wish I had have fired a variety of guns before settling on it because while I might have ultimately bought one, once I shot the P226, it changed my mind about the caliber I wanted to deal with on a EDC basis. Also, the trigger was significantly better (although in a $900 gun it better be). Finally, it really made me strongly consider either trying to find a 5906 or 4006 that's already in California, or add a Beretta 92FS to my collection in order to get that steel frame handling that seems to do so much better than polymer does when it comes to muzzle flip and recoil.
All that said, I still appreciate the SDs for what they are and plan to keep at least the SD9VE. I'm going to have a smith put in the Apex spring and replacement trigger to make it a lot less of a chore to fire and upgrade the sights, too, so it's something I can use with a flashlight. One thing I really appreciate about the SD40VE and SD9VE is how SIMPLE they are. No decocker, no disable switch, no hammer. Just point in. Makes training more simple, and in an SD situation, gives you less to get wrong.