Woops, I didn't read this post carefully, thought I was hearing from a father not a son. 600 bucks eh ? I like Asa's idea of buying something to carry you through later upgrades, and I like the Totem and Triangle suggestions. The Totem Ones are _much_ harder to drive than the Triangles though. Maybe one could get lucky and find a used pair of Meadowlark Kestrels ?
However I run a Linn LP12 and I say source first. I have always wanted to spend more time with a system whose source was superb but whose downstream stuff was not, than vice versa. My advice would be to look for speakers that you will love for $600--Totem, Triangle and Meadowlark might be right, keeping in mind they are not equivalent and need different electronics--but do this only if you already have a great source.
However I run a Linn LP12 and I say source first. I have always wanted to spend more time with a system whose source was superb but whose downstream stuff was not, than vice versa. My advice would be to look for speakers that you will love for $600--Totem, Triangle and Meadowlark might be right, keeping in mind they are not equivalent and need different electronics--but do this only if you already have a great source.