Tweaking QoS settings is largely a waste of time nowadays, but only if your router is running an OS new enough to include modern self-tuning QoS algorithms (and preferably a community-maintained project like OpenWRT, because the commercial vendors screw up their deployment of said algorithms).

Even if you aren't going to be hacking on your router much, it still definitely pays to ensure you're using hackable hardware.

> Even if you aren't going to be hacking on your router much, it still definitely pays to ensure you're using hackable hardware.

This seems to contradict itself - how does it pay if you're not going to be hacking?

Because you get the benefits of those who do hack, simply by installing a recent stable version of OpenWRT. It's no harder than upgrading and configuring the vendor's firmware. If you tie yourself to vendor firmware, you're tying yourself to 5+ year old kernels and all the associated security and performance and stability problems and a much more restricted feature set.

The commercial vendors do an absolutely horrible job of supporting or maintaining their products and they tend to get a lot wrong with the initial software release. The OpenWRT community does a great job of putting out a solid product that works and has sensible defaults, but you can only get the full benefit of their work if you buy hardware that is open to their hacking.