Thinking of getting an Apple watch SE, should i get GPS only or GPS + Cellular?

The cellular features are only really useful if you do not have your phone with you. For example, you might not want to bring your phone with you on a run, and you will be able to make calls and stream music using just the watch.

For cellular features to work, you must have an existing plan with one of our Big 3 telcos, and pay a monthly subscription for NumberShare. MVNOs are not supported.

Personally I think cellular is a waste of money, just get the GPS model. I bring my phone with me wherever I go anyway so the cellular features are of no use to me.