@stone1 I only know the European prices, here the PP500 is at 2200€ vs. 1700€ for the AT ART-9XI/XA... You might wanna have a look on their new entry level they introduced last year, the PP200. It has rave reviews from reviewers and real-life people I know. On your side of the Atlantic it seems to retail at 1800$.
The Delos lacked body and dynamics vs. the ART-9. And most of all, in contrary to the higher end Lyra cartridges like the Skala and the Kleos that I heard many times on my dealer’s and fellow audiophiles’ systems, it just wasn’t involving with the music I was listening. Like it’s just sounds and not music. In that regard, I would say that the Delos is at the bottom among the AT ART9 and Hana ML that I mentioned before.
Regarding cartridge compliance, the issue with the figures quoted by Japanese producers is that they measure it at 100Hz, while the Vinyl Engine table is intended for compliance measured at 10Hz. The real measured values are usually significantly higher for these cartridges. For example, the Phasemation cartridges’ compliance values are given at 10 at 100Hz but are in reality 18 when measured by the European distributor. So perfectly matched for low & medium mass tonearms. For the Audio Technicas, it’s the same story, you can multiply the values by at least 1.5 for the purpose of compliance matching with the Vinyl Engine table. Both options will be fine,
Just keep in mind that the XA version that puts out 0.2mV will require 8 dB higher gain in your SUT/phonostage section than the XI. That means any grounding issues, phono cables and other noises must be impeccable in order to fully enjoy the cartridge.
Just my 2 cents