What would you guys suggest as a good 3D model format for use in games considering that use I OpenGL? After doing some work on my Water Demo, I was thinking of playing further with 3D and seeing how creating a model loader would work out. However what format(s) should I be looking at?

I'm new to this, so maybe a simpilier format to start would be wise?

Do I want low poly only? Or is this a relic of early computing hardware and we've overcome it by now? If so how far can I take this?