Multivitamin choices?

I've heard many times that it doesn't matter. All vitamins are made in just a few factories...... then they're sold in big drums to the various vitamin companies who stamp them into pills and put them into bottles. Some companies just sell them for whatever profit - some companies go for the BIG profits by making Big, Loud and Extravagant claims about how wonderful their vitamins are.........

But they're all the same vitamins. So might as well buy the cheap ones.

Thanks