I've been lucky, but there have been a few: Sig Sauer Model P-220, S&W Model 6946, S&W Model 6906.
I was a die hard Colt 1911 guy in my youth, but had to have one of the new DA/SA .45ACP semiautos when they first came out. At the time, I think me and ol' Sonny Crocket on Miami Vice were the only two guys in the U.S. to own a Sig P-220. I had to pay a premium for mine, which included selling a perfectly good Colt's Government Model to pay for it. While it may have been a great gun, it just did not fit my hand, and I could not hit the broad side of a barn if I had been nailed to it. It was fine for slow fire, target shooting, but I bought it for SD/HD, so it had to go.
I remember back in the early 1980s reading about the new S&W "mini-gun", the Model 469. Wow! I had to have one! Unfortunately, being a poor college student at the time, the best I could do was drool over the magazine photos. Fast forward to around 1988 and I found a nice S&W Model 6946 at a killer price at a gun show. After taking it to the range, I found it consistently shot low for me - like about 8.0 inches low. I tried several different types of ammo without improvement. I contacted the factory, and they sent me the Fed Ex label to return it for warranty repair. They installed a different sized front sight, and returned it to me. I tried again, no real improvement, so back to the factory again. This time, they installed a new barrel, and told me this was the best they could do, and if the piece still shot low, I was out of luck. Well, it didn't work out for me, so I sold it off. Real shame, as I really wanted to like this pistol.
Fast forward about 20 years and I found a nice Model 6906 for sale at a local gun store. I got it at great price, and remembered at the last second to ask if there were any extras. The clerk said he thought it came with a box, and did I really want him to go look for it? About 20 minutes later, he gave me a factory hard box (blue, plastic) that held 2 new, factory magazines. Man, it always pays to ask! I took it to the range, and yep, it shot low for me also. My sad conclusion is that at least the compact 3rd Generation S&W semiautos just don't fit my hand (I had a Model 4006 that shot great for me).
Regards,
Dave