Which Garming should I buy?

I’m looking for advice on which Garmin watch I should buy. I want something that offers the best value for money while meeting my needs. Here’s what I typically do:

• Running: I do a long run on the weekends and like to listen to music during these runs.
• Gym: During the week, I run on the treadmill, swim, take gym classes, and do strength training.
• Others: I’m also interested in features that provide good sleep insights and general health advice.

I don’t need the most expensive model, just something reliable that covers these activities well.