I recently finished my custom PC, complete with a functional cooling loop. This made the task of cutting the hard plexiglass tubes effortless. Far superior to the hack saw I'd been using. Cuts clean, cuts quick, cuts straight, reasonably quiet (for a saw) which I'm sure my neighbors appreciated (I live in an apartment complex).
It's currently socked away in storage, but I will absolutely be using it again when/if I start on a new system.
A wonderful tool.