Golf V TDI 8V/16V: No DPF - Which Engine?

Hello!
There are many different opinions about it, and even the 'helpful' ones couldn't assist me.

It is said that two different engines are used in the Golf V 2.0 TDI (103 kW), supposedly since the 2007 model year.
It features two engine types: a two-valve engine (in conjunction with a DPF), and a four-valve engine with a balance shaft and modified injection (possibly piezo-electric) - without a DPF.

What is correct in this situation? What are the advantages and disadvantages of the 'newer' engine (if it is installed)?

Thank you.
Regards,
Razor.

Here too, searching can be your friend and might be helpful.

/viewtopic.php?t=12361&highlight=touran