JBL D120 vs K120 vs E120 - The 3 ERAS of the ULTIMATE Guitar Speaker

I'm playing and comparing the three series of JBL guitar 12" speakers; The D-series (until 1973), the K-series (1974-1979), the E-series (1979-1980s). These are mind blowing speakers way to expensive to build and sell today. The speakers are:
D120F (8 Ohm), Alnico, 35-100W
K120 (4 Ohm), Alnico, 150W
E120 (8 Ohm), Ceramic, 300W
I'm using a Gibson Les Paul 1959 Standard Reissue and a Fender 60 CS Relic Telecaster though a ToneKing Royalist MkIII. The cab is a Marshall JCM800 4010 (only cabinet).
Close mics: EV-RE10 and Unidyne IV 548
Room mic: AKG C414BXLII
Hallway mic: ADK small condenser