Jsujo, Off the topic, looking at your system setup, I would have kept the EV 12TRXBs and replace the MC40 with something better like 300B SET amps or even some more suitable EL84 Push pull amps. The MC40s seems to be bottom heavy to me. As far as preamp goes, I prefer the SP-11 MKII over the TF-10s.
The sound of the EV 12TRXBs can be still improve with better cabinet. They sound great with transmission line cabinets like the Tannoy retangular GRF.
As far as Tannoy gold 12" goes, it sounded quite thick and dark to me. A super tweeter with right crossover would help. Works well only with SETs and not very clean sounding with Push Pull amps.
As far as JBL goes, I like the 075 + 375 with D130 bass driver. Again, they sound better with lower power amps. We tried with active cross-over. It sounded okay but we prefer the passive with single amplification.