I'd prefer sticking to one service specially since I'd end up paying. Flickr/500px seems to be what I will like better but I explained above why I am afraid of

I'd prefer sticking to one service specially since I'd end up paying. Flickr/500px seems to be what I will like better but I explained above why I am afraid of going with Flickr. I know anything about 500px though. Yeah, my preference would be an online gallery hosted service with a reliable backup if such a thing exists!