Thanks all for sharing your input. I do appreciate it, and one of the reasons I love THR is that people are generally respectful and insightful.
The XDS has been sold. I made it clear the problem I was having, and the guy said if he couldn't fix it he'd get Springfield to fix it.
I'm making one last attempt at finding a semi-auto carry gun that isn't a lemon. I currently have a Sig P938 on layaway, and should have it in the next week or two. I have shot one before, and I absolutely love them, so let's hope that after a break-in period mine functions as it should.
A Ruger LCR in 9mm is also in the works for me. That way I can have a revolver for carry, and it will be in 9mm so I can keep my centerfire handguns all the same caliber. I have shot several LCR's before and I do like them, I think between the 938 and LCR I will have a nice concealed carry setup.
To make it clear to a few of you: I'm not bashing the XDS. I'm not saying it's a horrible gun. Obviously I know there are lots of people out there who never have any issues with theirs. However there are also lots of folks who have experiences similar to mine. I give it 600 rounds of a fair chance and thoroughly cleaned out the striker/firing pin channel TWICE. I've explained my reasoning in depth in previous posts and I feel I am very justified in my dissatisfaction with my XDS' performance. I wanted to keep it, I really did like shooting the thing.
Just like if someone buys their first Chevy (for example), and all it ever does is break down on them and have problems and they'll never get another Chevy, even though they know plenty of people never have a negative experience with them. Like Chevy, this was my first Springfield and will most likely be my last.