In that price range, you'll get the Asus RT-AC68U recommended most often. It's little more money than you are budgeting but probably worth it if you are truly looking for a premium router.
Other options:
Netgear Nighthawk R7000
TP-Link Archer C7 (95% of the performance for half the price)
Asus RT-N66U (if you want a great router but don't want AC)