Native install for me. I can't compare it with crouton, as I've never even really used ChromeOS. The first thing I did was replace it with Debian. I'm pretty happy with what I have now, though. Everything works out of the box with Arch.
If you're on the fence about going native, you should do what I do: install arch on an SD card and boot from that. Good SD cards these days are plenty fast too, and if you like the native system, you can keep using it from the SD card, or use it to install Arch on the SSD. Just make sure you get an SD card with TRIM, and it'll work fine for long-term use.
If you're on the fence about going native, you should do what I do: install arch on an SD card and boot from that. Good SD cards these days are plenty fast too, and if you like the native system, you can keep using it from the SD card, or use it to install Arch on the SSD. Just make sure you get an SD card with TRIM, and it'll work fine for long-term use.