B&W 804 diamond or previous 803D?


Could you please help me in choosing the better option? I can buy either of these two speakers but new 804 diamond cost by €1.150 more than second-hand 803D. What would be your advice?
papalam
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As a second opinion Elizabeth is absolutely correct. You will be getting a better speaker for much less money with almost all of the "immediate" depreciation taken out of it already. It is not a trick question trust your instincts on this.
I also agree, and wanted to ask about your room size? If too small, maybe consider the 804D. Otherwise go for the 803D for sure. You will want a larger amp with it too.
Thank you all for your responses. Elizabeth, you explained so clearly about better investment in 803D. That made me decide to buy these speakers. After that I will ask you about a good matching amplifier for them. My current one is Onkyo A-933 obviously being too weak to drive 803D well as I understood from other sources. By the way, my room is 50m2.