I think you just have to try and find out what works best for you. I use Garmin straps and have never failed to get less than 5 years out of them. I don't do anything special, other than rinse it off after every ride. Occasionally I remove the pod and make sure the snaps aren't building up any crud or corrosion.
But many people claim they get better use from Polar and Wahoo. So pick one and see. At worst you get the same results you did from your Garmin straps.