Well,
you can't really compare the Espada to any of the other Lamborghini models, this was the only Lamborghini sports car that could actually hold four adults in decent comfort, try that in one of the other 2+2 models, the rear ones are cramped.
At this time the Espada was in production it was the faster four seater on the market, some publications even called it the Italian Rolls Royce.
Regards