Generally Ive come across meshes with holes, some alleged UVs (laughable), 5 siders and so on.

What we look for is a clean mesh, quads and no N-sided faces no lamina faces and so on. Thats why I say its just better to build your own, keep an eye on it keep it clean. You'd be surprised at some of the dirty meshes I have had to clean up from Digital Domain. Ludicrous, these so called 3d modellers/generalists are a disgrace, they just want to put their names on stuff and make a bit of money and say. 'yeah I did that' There is no fundamental understanding of a good mesh in some cases. Its common sense.

The uv side of things is that alot of artists hate the task, but if you want a good texture you gotta have good uvs, Good uvs on a model are not done in one click with a plugin or otherwise. Yeah sure get something rough mapped out with a pelter if you want but dont take it for granted. Be good to your mesh and it will serve you well at the end of the day.

Jay