Just like everyone else, I would also recommend an Archer C7 of whatever revision is the latest stable tested unit. As someone mentioned, the FCC recently clamped down of this, pushing mfgs to include protections against allowing the consumer to easily replace the original firmware. TP-LINK has been locking things down a bit more as off the past few years. Love my C7 w OpenWRT, great choice for a sub $100 device with tons of flexibility.