5 desktops and 5 laptops ... sounds like my collection :-) [I have more desktops than that but only 2 laptops - my wife seems to think we have too many computers for just the two of us !!]
But of course a nice new Core 2 Quad with a couple of terabyte drives and a high end video card (GTX280 ??) would certainly be a nice addition to the collection :-)
... and it would certainly let you connect your 3 drives to it => so it would be an "answer" to this question !! [Albeit not exactly the most economical one :-) ]