So I've hit the capacity limit for the WNDR3800 for upstream bandwidth:
http://files.toke.dk/bufferbloat/data/karlstad/rrul-2014-02-08T195914.021795.cerowrt_3_10_26_fresh_boot_no_sqm.png

This is without sqm enabled, even. When I plug in my laptop instead, I
get a smooth 100Mbps in both directions. So I'm now looking for
alternatives to act as router. Any suggestions? I'd prefer dual-band,
dual radios; similar to what the WNDR has. And has to be able to run
OpenWRT, of course; in which case I'll try to get Cerowrt running on it. :)

One possibility is getting something like a zbox:
http://www.zotac.com/products/mini-pcs/zbox/product/zbox/detail/zbox-id91-1.html

Or a shuttle:
http://uk.shuttle.com/products/productsSpec?productId=1718

However those might be a bit overkill. Also I can't seem to find any
info on what wlan card they feature. Does anyone know?

-Toke