If you want a carry 40sw, I would tend to point you in the direction of the XDm40 3.8" compact.
I've owned XD, XDS, and XDMs. All are excellent. The XDm is just more excellence than the XD, and...why not? I say "3.8 compact" because it's just a more carry-friendly package according to my needs.
But get what fits your needs and budget. I carry an XDs45.
"The Future is Unwritten"