I haven’t found one that will reasonably sell me a warranty and that has a good reputation. Warranty cost is a proxy for how likely it will be to break and is insurance against having to shell out another $1k+ over a 3 or 4 year period. System76 is the only one I’d consider and their 3-year warranty is nearly $400. Thinkpad warranties are $150 for the same level of support and $200 for the warranty where they physically fly a person to fix your computer within a couple days.