Which is the “real” paypal express?

I’m really confused.

I bought a paypal express from woothemes, then they made it free. it was from skyverge version 3.7.2. It seems to not work anymore and not being fixed.

But now they seem to be giving a different one by automatic version 1.1.2.

Now I find this one. But they are all three named paypal express.

Is this different than the others? If so, how?

I bought it originally because I wanted to send people directly to paypal to pay and enter their info at paypal and then be sent back to my site (and their info comes too) to finalize the order. Does this one do that?

Can anyone clarify what’s going on with these?

Thanks,
Scott