"You know, things were more complicated in the past.
Corporations had to rule world from the shadows using smoke and mirrors. After the wars everything is simple.
Which one to join? Doesn't matter really. Every corporation is a key for the heaven's door reeking of sulphur.
Sentinels? So called peacekeepers, nothing but cheap corporate war hounds.
Syndicates? Syndicates rule the streets. You will need them to survive and gain power in the city.
There are many ways to gain and spend almighty credits, choose your way wisely!
Trust your instincts and nothing else. Oh and watch out for psionics, they can be nasty!"