Is it a good idea to create multiple partitions for different Linux distros on my SSD?

I've had success with allocating around 40GB for each Linux root partition, using symlinked directories for data storage to optimize space. If you're feeling adventurous, consider using BTRFS—it allows you to create mountable subvolumes on one partition, which can be handy. The downside is that some distros don't let you install directly onto a subvolume, but you can set it up after installation.

If you plan to juggle multiple distros, setting up an LVM (Logical Volume Management) might be a better approach! It simplifies managing partitions and gives you the flexibility to resize or delete logical volumes without too much hassle.

You could also use Live USBs for testing out new distros—they're convenient and don't clutter your SSD. But if you're aiming for long-term installations, I get it. Just keep in mind that experimenting can eat up disk space quickly.