PSVANE TS66 or Yaqin MC-13s?

I'm having difficulty deciding between these two tube units. I can get either for around the same price.

Speakers: 89dB/W 8 ohm Martin Logan SL3
Source: Mac mini w/ audioquest dragonfly DAC playing FLAC and high resolution files
Material: I listen mostly to vocals, colbie caillat, jack johnson, owl city, diana krall, norah jones. The room is very small, would probably fit a kingsize bed and MAYBE a dresser, max. I don't normally listen to music over about 80dB.

If there is anymore info that I can provide to help, let me know.