I know loudspeaker design has evolved significantly since the early 1980s, but I am curious to know how much it has advanced since about 1990, when companies were putting more science into their designs. In other words, would a 1990-era tower from Paradigm, Mirage or Boston Acoustics be considered old school and inferior to what those companies are producing today or would the older models hold their own nicely? I am speaking in general terms, not trying to compare model by model or even in 1990 dollars versus 2007 dollars. Thanks in advance