Which SS integrated amp to choose?


Guys, will appreciate your recommendations for a good sounding second-hand SS integrated amp with output power 100-150 w (at 8 ohm), weight up to 30 kg, budget up to 4K, age starting around 2000. My list now includes Gryphon (Atilla, Callisto 2100/2200), PassLabs INT150, Luxman 507/509. Not on my list are Hegel, Accuphase, Parasound, Marantz. Looking for balanced, on a warmer side, detailed, open, full bodied sound at my SF Guarneri speakers (86 dB, 6 Ohm). Feel free just to name the option or suggest yours. Thanks!
apanhc
buy pre-owned

my choice ...REGA OSIRIS integrated amp rules ..
my 2nd choice .... LFD LFD NCSE II Integrated Amplifier


i’d try to stretch to a mint condition ML 585 for 6-7k. A true high end product and extreme value. Has a great dac built in also. 
ML 585 over the ML 5000 series. I think I liked it more than the Luxman 509x. Though that was 12 months ago, but I do recall thinking the ML 585 was the best integrated I heard.

Today, if I were to look at integrateds, I would audition the Hegel 390.
Naim SuperNait 3....even has a phono stage :)
Had the ML 5805 here for an audition- not for me. 
The Naim will pair well with your SF speakers.
Yamaha AS3000 integrated fits most of your parameters. Wonderful sounding integrated amp and superb build quality.