I looked at 'aviator' watches a while back and decided against one as the dials are so complex that they're virtually unreadable, and - more importantly - they make you look like a bit of a tw@t.
I bought a Citizen eco-drive with a titanium bracelet instead. Simple, clear face, keeps perfect time, never needs batteries, lightweight and doesn't set off metal detectors. All for around £150.
A cheapo digital with a stopwatch would be just as good, but any half-decent aircraft will have a stopwatch anyway. Personally I'd tell the missus to save her cash for something more useful, like fast cars and beer.