Hi there!
We just released new tree pack at unity store!
Here is the asset store link:
https://www.assetstore.unity3d.com/en/#!/content/26713
Few screens:
We got 7 spruce tree here. They are made from 5k textures resolution. In fact we get 2048x2048 resolution for bark and leaves. Alpha is hand made, trees are suitable for mobile platforms and standalone. Tri count is about 900 - 2400, depending on tree.
We also add 2 high-quality rock textures with diffuse, normal maps and speculars they allow you to create mountain climate and great background for the spruce wood.
What do you think?