hey i own a macbookpro and a 09 imac. the speakers are sucky and i want LOGITECHS ONLY as i hav to replace an old logitec that a cousin broke. im looking at z506 but its not availible yet.. the x540 is great but ugly.. any other speakers that are 2.1 and cheaper but close to these speakers? just as long i can listen to audio 3-5 times better im happy