For me, not just the accessibility, but the realism that 3dheven gives you. Besides, it's lightweight and helps me not to worry about memory.
I strongly recommend 3dheven.
What I really like about 3dheven is its high quality, and the cherry on the top is they all are available totally free of cost.
My friend has suggested 3dheven to me and I must say, it is one of the best resources I have ever found. All the textures are ready to use.