That’s the question for OP, they mention running CAD and needing Linux. It will depend on what else if anything they use requires Windows and if Win11ARM is sufficient. I was fortunate to be able to run what I need for work in both Win11ARM and Red Hat in Parallels and that made the move from my 2019 Intel MBP to M5 Max an easy decision. The Lunar Lake Dell Latitude work issued runs fans more often in my workflow but they aren’t at an obnoxious 100% like my 2019 MBP. LNL and PTL are much better than previous Intel Core chips but agree that there is still fan noise compared to M5 Pro which usually doesn’t kick on fans until a sustained workload is initiated.
P.S. OP you can purchase a one-time license of Parallels if you don’t need more than 4 CPU cores or 8GB for your VMs. If you need more cores and memory allocation then you need the Parallels business subscription. That said, I have a feeling you need more than 4-core/8GB since you would run CAD in Parallels.