Benchmarking that I've seen shows that the M5 Max outperforms the DGX Spark, e.g. https://www.reddit.com/r/LocalLLaMA/comments/1tfzsd6/m5_vs_d... or https://www.reddit.com/r/LocalLLaMA/comments/1tr7hzw/psa/. Seems to me that Apple is doing pretty well with local AI inference.