Just a personal view I'd like to add,

I've been with Plusnet FTTC since January, and have had exemplary service from them, and I haven't had any problems whatsoever with the supplied 582n router. From what I gather I'm in the minority - although I am very technically literate and went through all the options and customised the settings to my needs - including disabling the automatic wifi channel selection, and forcing it to a specific channel.

I've not had any problems whatsoever. I have now upgraded from this, however this is for other reasons. (Now running a Buffalo WHR-G300Nv2 with DD-WRT).