SLC has a strong startup ecosystem, and around Provo these days also; it also gives you easy access to outdoor activity if you are into hiking and skiing (typical of west coast and mountain towns). The density of tech jobs is surely higher than Detroit, if not absolute numbers. Detroit has presences but they all seem to be tiny (~100 people each?), is it really considered a hot place for tech these days?

I will say, without knowing the ins/outs of it, that bellevue looked appealing for the variety of roles I could hold and live there.