From you list I like the Sig and S&W. You mention that you like the SA/DA of the Sig 2022. I prefer SA/DA to striker myself but, own a couple of strikers that I like too.
You mention the Sphinx SDP. I'll be posting about mine shortly that I just picked up yesterday. They are nice but cost around $350.00 or so more than the models that are on your list.
Other DA/SA models that would be worth a look if you have not already and are open to other models would be. Beretta PX4, CZ P-07, and FN FNX. Used you can find HK and Sigs at pretty good prices.
Striker models would be the HK VP-9, FN FNS, Sig 320, Steyr M9-A1, and Walther PPQ.
The Walther P-99 AS is a good middle ground model that's striker fired but, also a SA/DA.
For DOA the Sig 250 and Walther PPX are pretty good as well.
Sounds like you want to stay with models that are in the 4' barrel range. That size works well for duty, CC, HD/night stand, and range work.