Im writing a game engine and I\'m wondering what 3D model format should I use/load/export? Obj seems universal and easy but it also appears to be unreliable in that most mod
I use my own binary format. I've tried to use existing formats but always run into limitations. Some could be worked around, others where showstoppers.
Collada may be worth a look. I don't think that it's that good as a format to be read by a 3D engine. It's fine as a general data-exchange format though.
http://www.collada.org/mediawiki/index.php/Main_Page