The Boys of Silence

Aha! Someone finally answered my question on the official forums. Here is the answer:

As you progress you will learn a little more about each - but you'll soon find that it's not as straightforward as one good one bad. Trust me on that! I figured I'd side with one the whole way through, but in the end there was no way that was going to happen.

My advice would be to go with your gut - this is what the designers had in mind. Everyone will make different choices and that's a good thing. There are no wrong decisions on this. The only consequences really will be that you may start to read about the consequence of your choices which may paint the faction you supported in a more negative light. This is what makes it harder to side with them.

In the end, all the game related items are the same that you unlock regardless of which faction you 'side with'. The only difference will be a small image pack for use on your computer.

I hope that helps. Have fun.

So the faction you side with doesn't have any effect in the Bioshock Infinite, it just slightly alters the story in Industrial Revolution. That's all.

No, which makes me feel a little bit sad.

There is only few cosmetic changes (for example with like with Cornelius Slate) but you can't change ending as far as I know.

From Gamespot forum...

Look up for the Gamespot Lounge interview with Ken Levine, he says that 2k wanted multiple endings but he said "nope".

Also you can watch on Youtube interview (4 - 6 min) how Ken Levine say that they wanted to "make player experiance that he had to make choices" but also he tells that this choices not change plot.