I’ve had a number of Sigs, and my favorite is a P220 in .38 Super, which loaded properly performs like a 125 grain .357 Magnum, but kicks only a touch more than a 9mm and is much quieter than the .357 SIG, which is a boomer.
I had a P220 in .45 but only kept it a short time. I bought it from a small dealer at a surprisingly low price. I then discovered the guns were hard to get and people were paying good prices for them.
I was in grad school at the time and seemed to always be short of funds. I sold it for maybe a two hundred dollar profit. I then bought a Colt model 1911 series 70 from a dealer at a gun show.
I thought he was unusually honest as he told me it was a Frankenstein gun, put together from a lot of parts. If he had not told me, I would have never guessed. I think I only paid $300 for it and as luck would have it, it was one of the best .45 autos I have ever had.