It it worth to Upgrade s3 frontier to galaxy watch 46mm

[Android Central Question]

I have s3 frontier which I got 10 days ago. This is my first smart watch so I am pretty new to smart watches. Fortunately and unfortunately I just saw the new galaxy watch 46mm which is 100 dollars more. I am still in my return window so I can always change/return but I am wondering If it is worth to spend 100 dollars more and get the 46mm one or stick with s3 frontier. I travel a lot so better battery life is desirable and I also like to keep my watch while swimming. However, as I said , since I am new to it I dont know if it's worth or not.