I recently upgraded from a 10 year old Lenovo W520 to a System76 Lemur Pro, and have been extremely pleased with the purchase. It is lightweight (~2 lbs); software is fast, responsive, and free of bloat; chassis feels robust; specs are above average for the ultra book category (40GB RAM and 2 NVMe drives); good battery life (around 6 hours real world use); and good online documentation. Overall, I would highly recommend, and I am excited to see what direction they continue to go in as a company.