Officially... the 910 is a 3rd Gen "Value Line" pistol. I have taken to calling the 908, 909, 910, 410 and 457 the "TRUE Value Line" pistols, to differentiate them from the original two pistols that S&W dubbed Value Line (the 915 and 411) which were built to a higher standard.

The later Value Line pistols had more cost cutting, which was S&W's original intention. Cut costs, lower the price, sell lots and lots.

We don't have production numbers published anywhere that I have ever seen, but my educated guess is that of all of them, they built and shipped more 915's than any of the others.

The 910 is a full size, alloy frame double stack. It was shipped after 1994, so it's original magazine was a 10-round limited "ban era" magazine, hence the 910 model name. The 910 will happily accept and use any/all full capacity S&W metal frame double-stack 9mm magazines, at this point likely best known as "5906 Magazines."

The 910 (and 908, 909, 410, and 457) are most easily noticed as "different" because S&W did far less milling of the slide, and it looks more blocky and less sleek.