Perhaps the highest quality mainline quants of Qwen3.8 27B?

New quants for Qwen 3.8 27B have been released, claiming to be of the highest quality. These quants reportedly surpass existing ISTA and Unsloth quants in byte-for-byte performance across three corpora. The development involved extensive testing, including KLD and top 1% metrics, conducted three times. The generation process required a week of continuous GPU and CPU time on a single Strix Halo.