High-end laptop lines (Dell, HP, Lenovo) have actually pretty good linux support, they are almost always intel i5+ cpus with integrated graphics which are all very similar. There is next to zero setup required in almost any case. This is known. The drivers are tried and tested. I've never experienced any random "power management issue". Suspend/resume/battery consumption/acpi is working perfectly fine. What else does qualify for "power managment"??
I've been supporting a team of 20+ people with these lines in a mixed environment, and linux since more than a decade was always basically plug and play.
There have been some quirks in some models, which generally required some tweaks in the kernel boot line, to fix issues with backlight tweaking.