I was not familiar with Trilogy so I looked up the brand. Really beautiful amps. However, nothing in the published specs suggest they would excel at driving difficult loads.
Have you looked at Accuphase? Some of their amps are stable below 1 ohm, and they have a sound that can be described as warm. Their A300 monoblocks are rated 125W into 8 ohms, 250W into 4 ohms, 500W into 2 ohms, and 1000W into 1 ohm. That's really as good as it gets. They're also beautiful and their build quality is gorgeous.
I am not a fan of Wilson speakers honestly.