Plinius - experiences/opinions

I'm looking for a quality (used) integrated amp to sit between my Shahinian Arcs and Jolida JD100 CDP. Plinius is reckoned to be a good match for Shahinian speakers but:

a) there are a number of different models to choose from on the used market: 8100, 8150, 9100, 9200. I'd appreciate any feedback on the real-world differences between these models.

b) there seems to be an awful lot of Plinius gear available used, which makes me wonder whether the gear has more downsides than Plinius enthusiasts make out.

I'd love to hear about people's experiences with Plinius gear before making a decision. I listen mostly to small group jazz and blues these days. This is a two channel, line-level only system.

Thanks in advance.

Simon
Los Altos, CA