Conrad Johnson pre's are really what they are know for best, although their amps are incredible. CJ Premier product line is usually Stereophile status such as Premier 16LS; Premier 17LS, etc (not Premier 18 in my opinion) ET5 is newer and in ways superior to their new mid product the ET7 (have not heard the ET-7 series 2 which came out w/ in a year of the ET7 release. Just some recommendations. The price is now always an indicator as well. The Premier 17LS in ways is less liquid than 16LS, but not in a bad way. Most everyone I know who has had a 16LS, had a 17LS and could never completely decide which to keep so they ended up keeping both because there is the slightest difference. They all sound like CJ pre's though.