ARC VT-100 mk1 or BAT VK-60?

I've been considering ARC VT-100 or Bat VK-60. I have never listened sound of both yet. Anyone comment which is better sound to drive my JMlab speakers with 91db, 8ohm, 150w. My room is 20m2. I listen mainly rock and jazz.
Thanks to all in advance.
Batlua