Ask HN: 802.11ac-enabled routers for OpenWRT, zRouter, Tomato, pfSense, etc.?

I'm about to move into an apartment with a 100 Mbps connection from WebPass, so I'm looking to buy a new router and/or access point. As far as I can tell, they use Large Scale NAT[1] on IPv4, so I'd like something that allows me to install firmware where I can configure and tinker with IPv6. I stumbled upon this thread[0] from last December, but was curious as to whether people feel the advice in that thread still holds true and/or if people have had any experience with newer 802.11ac routers/APs (especially devices from Buffalo, TP-Link, and Ubiquiti) now that they've been on the market for a few months. [0]: https://news.ycombinator.com/item?id=6828699 [1]: http://webpass.net/blog/ipv4-exhausted