From the little I’ve read on the Netgear, specs look impressive. I’m thinking about getting Aruba APs because my ZyXEL NWA-3560n 802.11n APs are over ten years old now, and will die at some point, but they have been superb.
The flow-hash method is a very sensible one, stateless and fast. You had to set up the modulo->interface assignments yourself ? Because the router doesn’t know the relative speeds of the links.
My FB2900 router splits single flows across interfaces in the correct split according to each link’s upstream speed and it (now) gets the upstream speeds from a message delivered to the river by the ISP at PPP connect-time (suffixed to the normal connect string as <downstream>/<upstream>) and this is multiplied by a fraction given the config file which converts the PPP-specified speed into a true IP PDU bps speed. If a link goes down then the router recalculates the split according to the remaining links’ speeds.