I have the 601 series IIs from 1984. It took me years and years to set them up optimally but when I did, the soundstage was superb. Then I got the M80s and realized I was missing 80% of the sound spectrum with the 601s.

Save up for an extra month and buy the 80s. You won't regret it.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated