HP stuff is too beige/bland. Tektronix stuff is more colorful.
Some of the Japanese brands were even more colorful, but we always used either Tektronix, or HP, where I worked (I used to write GPIB controller programs for them).
Some of the Tektronix CRT scopes had unique phosphor colors or compositions, so it adds a lot of extra cinematic flare.
https://w140.com/tekwiki/wiki/Phosphor
It also is just the right era to fit a hugely wide range of periods - you can get away with them into the 20s or 30s if you're doing a bit of retro futurism, and they're not out of place even today.
There are just two photos in the entire gallery of 150+ that show modern scopes. The rest is vintage CRT equipment, going back to black-and-white films.
HP stuff is too beige/bland. Tektronix stuff is more colorful.
Some of the Japanese brands were even more colorful, but we always used either Tektronix, or HP, where I worked (I used to write GPIB controller programs for them).