They are wonderful in a particular kind of way, most notably in their mid-range and treble performance. This makes them wonderful for vocal and operatic music but less effective for driving rock music - the bass, whilst very musical, is in relatively short supply compared to more modern boxes. They are an intrinsically musical sounding speaker and very accurate tonally which, of course, is what made them so popular at the BBC. IMO though they are surpassed by more modern designs and much of the crazy buying and selling is more down to nostalgia and their reputation.