Another vote for the GQ-24. There is a similar cable available on ebay for £30, search 'phono LOD'. Such cables bypass the ipod's amp and that makes for better sound and easier volume control as your main amp does the work instead.
Got to agree, the GQ-24 is brilliant. Ive got it connected to my cyrus2 amp through the cd input and its just fabulous. My brother had his connected to a Sony 1200es cinema amp through the front video inputs and he was blown away by its performance, had Russ Andrews brought out one with the video connection as well it would have been the icing on the cake.