More P12 Zone D Questions

Is zone D better used for a high current solid state amp or a tube amp such as 2A3 SET? I understand zone D has a higher output impedance than the other zones. If so, is it better to plug mono blocks 2A3 SET amps into separate zones and delay the startups. If zone D has higher output impedance, what type of device is the least affected by the higher output impedance? Finally what type of devices are best suited for low output devices?

At what temperature does Zone D inrush limiter become ineffective?