What’s the best way to transfer my Arch Linux setup to a new computer?

You can use the `dd` command to create a complete disk image. Just run `dd if=/device/partition/ of=/your/backup/disk.iso bs=8M status=progress`, which will create a bit-perfect copy. Just keep in mind, it'll also copy empty spaces and the partition layout. But, it’s a solid option if you need everything as is.

Clonezilla is definitely worth considering! It's user-friendly and pretty quick, plus you can save your image to a network drive or a USB. Just a heads up, if the hardware between the two machines is really different, you may encounter some issues, especially with partition sizes, but it usually works out pretty well.

I've had good luck with Clonezilla as well. I usually back up my images on my NAS at home. It's pretty smooth sailing with the transfer, though if your new computer has a larger drive, remember to expand the partitions afterwards. Most times, my installations boot up without any hitches.