IMO there is only three choices in wheels.
Budget option – pro2/stans
Better option – chris king/stans
Best option – chris king/carbon rim/cx ray spokes
You can’t go wrong with dt swiss 240s, but again out of budget.
The pro2/stans is the only option in your budget.
The hope hubs are ok, nowt special, spares are readily available and not extortionate.
Mavic hub construction are pretty horrific in my experience. Spares are expensive and annoying to get too.
Chris king – hubs for life, fully serviceable, a treat to work on.