awizard, I have owned multiple 10MM S&Ws, to include 1006s, 1076s, 1026s and a couple of S&W 610 revolvers. I have also had a Glock 20, Colt Delta and Bren Ten.
The S&Ws suit me the best, especially the 5" guns. The S&W pistols have the slide mass to handle the real 10MM ammo, without having to worry about extra heavy recoil springs, buffers, etc. I really like 1911s, but not in 10MM. They have a lighter slide than the Smiths, and the Glock. In most any discussion of the Delta Elites, you will soon find heavy recoil springs, and buffers being discussed. The Delta slide cycles at about warp 9+ and is just too light IMHO. Milder 10MM ammo in the Delta is not a problem. But, I admit, I did not buy a 10MM to shoot .40 S&W equivalent ammo. Mine didn't break, just the white dots immediately came out of the sights. A fellow shooter reported that the slide on his Delta cracked on top, through the locking lug area ahead of the ejection port. Colt replaced the gun under warranty and he immediately sold it without ever shooting it. The S&W 10XX series I owned were as accurate as the average commercial Colt .45 ACP at 25 yards. The two S&W 610 revolvers with 5" barrels I owned were more accurate than their pistol counterparts at 25 yds. In fact, the 610 revolvers would out shoot any other 10MMs I ever owned. I have owned at least six S&W 10mm semi-auto pistols over the past, almost 20 years. I can only remember a couple malfunctions total between them in all that time. A few years ago I found a LNIB, unfired 1026. It has been an excellent gun and I'm going to try to hang on to this one. Clean S&W 10MM pistols are beginning to get hard to find at any sane price...ymmv