Indiana Jones and Pbb have given good advice. Because I think (or imagine) that I know exactly what you mean, I would be more specific:
You are above all looking for sensitive (efficient) speakers with excellent dynamics and transient response. I'd recommend professional studio monitors, whether vintage or new: Altec 604s; a range of configurations from the JBL Professional line; Tannoy DMT 12 or 15s; certain Klipsch. My personal opinion is that dollar for dollar, Tannoy DMT would be your best bet. A clean, high-current amp will get the most out of the speakers. Overall, for what I'm guessing you spent on your current set-up, you could put together a quite satisfying system. Regards, Dr_joe.
You are above all looking for sensitive (efficient) speakers with excellent dynamics and transient response. I'd recommend professional studio monitors, whether vintage or new: Altec 604s; a range of configurations from the JBL Professional line; Tannoy DMT 12 or 15s; certain Klipsch. My personal opinion is that dollar for dollar, Tannoy DMT would be your best bet. A clean, high-current amp will get the most out of the speakers. Overall, for what I'm guessing you spent on your current set-up, you could put together a quite satisfying system. Regards, Dr_joe.