Hardware Oscillope Users?

Does anybody use a hardware Oscillope with their DAWs?

Part of me would like to always have the vision of one in front of me to see the wave relationships etc. Part of me thinks I'm just coming up with a new way to waste my money.

I have a VST one but I feel like it'd be nice to have one on a separate screen at all times without moving it around other plugins.

If you do own one which is it?