The 2007 Awards isue suggested the Tannoy Mercury F1 Custom speakers as a suitable upgrade, but then went on to describe them as requiring "decent supports and don't like being squashed into corners"; given that many people (like me) will use the Onkyo as a secondary system, isn't it likely that speakers will end up on bookshelves...? With this in mind, can anyone suggest a speaker upgrade that will offer significant sonic improvement without being so fussy about placement? Wharfedale Diamond 9.0? Q Acoustics 1010? Mordaunt-Short Avant 902i...?