I’ve gone through that same decision process while building an adjustable monitor lift for a multi-desk setup in our office. It depends a lot on how much control you need. If you're just moving the slider from point A to B without needing it to remember its position or adjust mid-run, then a non-feedback actuator would probably do the trick. But if you want to automate precise start/stop points or integrate it with an Arduino or similar for repeatable shots, feedback becomes important.
In my case, I went with a feedback actuator because I needed it to remember its last position after the system rebooted. It was worth it. I found this page really helpful when comparing the options and figuring out stroke, force, and control electric actuator 12v:
https://progressiveautomations.com.au/collections/linear-actuators. They clearly list which actuators include feedback and what type (potentiometer, hall effect, etc.), so it helped me match one to my controller.
If you’re working with a camera slider that needs timing and position memory for video shots, I’d lean toward feedback. But if you're doing manual starts/stops, then save your budget.
