> To the experienced devs out there; would you take a 15% less offer from a medium sized company for job security?

In a hot job market, no.

In the current job market, yes.

It's one of the main reasons I am sticking to my current employer. I could likely make more money by moving jobs right now ; I still get the odd recruiter reaching out here and there; but I fancy the security when I see dark clouds on the horizon.

And oh boy, those clouds are very dark. Foreboding indeed.