My old router, a Belkin G, had started disconnecting every 5-10 minutes so I bought this as a replacement. Set up was very easy, and within 10 minutes everything was working perfectly. I ran into two snags: the first one was when I turned on Network Lock by accident, preventing my sister from being able to connect. Turning it off obviously sorted this instantly. The second was that one of the laptop's I was trying to connect it to wasn't showing up with any wireless networks, which turned out to be a problem with its wireless card. Neither of these were actual defects or problems with the router itself.
The signal seems very stable and snappy compared to my old router. In my room I'm not getting ethernet cable connection speeds but the speed I am getting is decent nontheless. I'm on 20mb broadband, get 14-18mb when connected directly via ethernet cable to my router, and 7-12mb up in my room (the signal has to pass through steel girders so this is to be expected).
The software that comes with the router is excellent and provides a nice hub for configuring your router if you're inexperienced with networking. One feature I don't like is the ability to screenshot other computers on the network that have the software, and even though you can probably disable it, I've only installed the software on my PC for this reason (there's no real need to have it on other PCs that won't be fiddling with the settings).
Overall a solid, stable router that doesn't offer blindingly fast connection speeds but is definitely an improvement over my old Belkin G.