Was thinking of getting the vivoactove 6 but unsure if its right for me

So recently I've been in need of a watch and stumbled upon garmin watches whilst looking into them i saw the vivoactive line reccomended to me by a member of my family.

I am thinking of getting the vivoactive 6 but not really sure of it's the right one for me, I do daily exercise by doing long walks and strength training about 4 times a week.

If you have any suggestions please let me know my budget is about £300 to £600