Many thanks to K. Tsai. I purchased 3100s, Cherry 5Ks, Black 5KC, DSW1500. Since I live nearby, Ken allowed me to take them home to try them first, which made the whole buying experience completely stress free for me. I've been lucky so far with my speaker purchases, but I must say that these ones from Ken are absolutely the best condition speakers in my collection.

Summary: very positive.

Jamie

Cave: Trinnov Altitude CI-8; Oppo 203 Vanity HD; 6xDSP5k, DSP5kC, D1500; Sony Z9D, PS5 Pro; Apple TV 4K
Living: Wiim Pro; Rega Planar 1+; 2xDSP5k
Master: Wiim Pro; 2xDSP3100
Kitchen: Bluesound Flex stereo pair / Amazon Echo Studio
Deck: Wiim Mini; Random Chinese Class D; Cambridge Soundworks Outdoor 52s; Polk Sub;
Garage: Wiim Pro; 2x5k