I'm not an expert on routers but if I was in the market I would look at the Wirecutter. I find their recommendations pretty good.

thewirecutter.com/reviews/best-wi-fi-router/

Chiming in here with more anecdotal evidence - I always look in the Tomato (http://www.polarcloud.com/tomatofaq#what_will_this_run_on, http://tomato.groov.pl/?page_id=69) and DD-WRT (http://www.dd-wrt.com/site/support/router-database) "supported router" sections. Personally I like the Netgear routers which have semi-official support here: https://www.myopenrouter.com/

Draytek are a good choice at the consumer level.

Having used Drayteks, and supported them, and indeed having owned one (company supplied for site-to-site VPN) I wouldn't recommend them. The feature set is great, the router is not.

Fair enough. This is the problem with consumer gear, it's all so variable. For me, Draytek have been the only vaguely consistent vendor over the years. I've had countless issues with T-link, Asus and Netgear routers.

A starting point for me: LEDE support

That's: https://lede-project.org or:“Linux Embedded Development Environment” - the new project born from OpenWRT. I've used it with some old d-link routers, and I'm quite happy.

The documentation is still not stellar, but it has gotten better, and the configuration more consistent. It's quite easy to set up ssh-access with a key, and simply get a copy of configuration files with scp - ready to set up identical configurations on new router installs.