Hamburgcity,
Of the manufacturer's you've chosen i have owned two and heard one for a fair amount of time to voice an opinion...For quality, neutral sound, reliability,build quality and synergy capabilities i would choose the Pass Labs first...My second choice would be Gryphon for many of the same attributes though my reservation would be in the Antileon amp...Quite good but bettered by many now due to age of design.
Good luck,
Of the manufacturer's you've chosen i have owned two and heard one for a fair amount of time to voice an opinion...For quality, neutral sound, reliability,build quality and synergy capabilities i would choose the Pass Labs first...My second choice would be Gryphon for many of the same attributes though my reservation would be in the Antileon amp...Quite good but bettered by many now due to age of design.
Good luck,