Not sure where to post 'thanks' but hope here's ok.
tl;dr - Gargoyle fixed my semi-bricked TP-Link WR841ND v11 with OpenWRT. It works well and the stats are the best I've seen on a router - thanks
My new TP-Link WR841ND was occasionally turning off its Wifi - with the rest of the router working fine. Presumably just the Wifi driver was crashing, and I read someone had similar issues and installing DD-WRT helped. After then finding Open-WRT I thought to try that, however I realised support for the newer v11 still seemed sketchy.
I installed the Open-WRT 'trunk' which gave me a basic command-line router, but it wouldn't connect to the ADSL router upstream - rebooting/resetting a couple of times seemed to fix this(?) I wanted the GUI though, yet trying to install Luci kept giving 'out of memory' errors, even after some other tweaks to reduce memory on the package management system.
I looked to reinstall TP-Link's software, but found out that's tricky, and http://www.friedzombie.com/tplink-stripped-firmware/ doesn't have the V11 image yet.
Close to giving up, thinking I'd half-bricked my router, I came across Gargoyle and tried installing the most recent WR841 build with a bit of trepidation (there's some 'notes' beside the v11 image). I wasn't sure how the memory/storage worked on the router, but downloading Gargoyle and doing 'sysupgrade' with the image seemed to go smooth, and after a reboot its GUI appeared.
I was immediately impressed with the stats and info which are lacking on every other home (and business) router I've used before now. Gargoyle seems to better flatter Open-WRT with its user friendliness and stats presentation.
I'll certainly be installing Gargoyle on other routers when needed, and would recommend to some of my IT friends to try too - thanks!
Alex