My current choice would be an XD40sc and an XD40 Tactical
Same mags, same parts, same bullets, just one to carry concealed and one for open carry in the boonies (with better performance from the 5" barrel) I might have switched to the XDm40's but I have the sc already and the XDm's have had some teething issues.
I considered getting a CZ SP01 to go with my CZ75 compact (in .40) but I cannot do the gunsmith work on the CZ and the compact is too heavy to EDC.
I would have gotten a Sig P226 and P229, but the mags are not compatible (the P224 and the P229 are neat but I don't see the 229 as a full size service weapon and I'm just not feeling the P250)
I would consider a full size 1911 and a Officers model size with an alloy or Titanium frames but don't have that kind of bread, nor can I get them in .40, nor does single-stack mags blow my kilt up anymore.
Taurus 24/7 OSS and a Millennium Pro might work, but Taurus has too many issues.
The Styer M-A1 and S-A1 would have been nice, but they have issues as well and the 1/2" difference in barrel length is not worth the effort, the same could be said for the Ruger SR40 and SR40c.
In case you haven't noticed I put a lot of thought into this very subject recently. I did not consider a set of Glocks, mostly because I do not like Glocks they simply do not fit me. I want the different pistols for different purposes and I don't want two different types and calibers of weapon.