I don't believe Jadis has a US service center... so any repairs may require shipping them back to France. Also the "Black" version of the Jadis Orchestra uses cheaper third party transformers, unlike the better Jadis amps using transformers built in house. You'll get a lot more bang for your buck if you buy "used" from Audiogon or US Audiomart... just buy a brand that has a good reputation, preferably with point to point wiring and ability to service in the US. Also it looks like the Sonetto's (88 dB / 4 ohm) could benefit from a little more power than most of the amps on your list, with the exception of the Modwright. I'd want at least 80 wpc for a tube amp with those speakers.
Just quickly perusing the classifieds... here are some integrateds for your consideration:
- Cary SLI 80 (on sale factory direct on the Cary website and under budget)
- McIntosh MA252... hybrid with plenty of power and Mac is known to pair well with Sonus Faber
- Rogue Cronus Magnum "Dark" - $4,500 new
- Circle Labs A200 - used one listed on US Audiomart for $4,500... hybrid integrated
- Don Sachs Valhalla listed on US Audiomart
- Audio Research VSI 75 listed on US Audiomart