Finally some solid direction! I'd like to respond to all by mentioning that I enjoy mostly any vinyl from the early 70's to present including rock & Motown, typically groups that have recorded in well equipt (quality) recording studios. I would prefer to buy modern, previously owned/upgraded components and would like to ask for specific model numbers for the AR,CJ, BAT, Bryson, Cayin and VAS potentials. Elizabth, I have a local shop that upgrades the 3.6s w/"super tweeters", "conditioning electronics" and high-quality (internal) wiring. I've listened to them w/subs (because they were needed) & they the combo was very impressive. Any comment on them needing upgrades or was that smoke & mirrors ? Thanks everyone!