You can find older generations on eBay very inexpensively for what they are, install Ruckus Unleashed firmware on them, and operate them completely locally.
They have the best beamforming antennas in the industry and their firmware is rock solid. I'm on some very old models (2.4ghz and 5ghz only) but they work fantastically well. I'll probably upgrade to some wifi 6 models soon.
But for my uses 500-600mbps rock solid throughout my house is plenty. Anything where I want max throughput/low latency/low jitter (mainly gaming) is hardwired. For wifi I care much more about complete and consistent coverage.