The first link is IPF, you can choose between 5 different tuning modalities. It's like a computerprogramm...
The second link is powertuning only! You get one programm and can't change.
I've bought the second on, that's alright for our cars. The IPF is actually necessary if you own an OPC, than the IPF makes sense... Our engine doesn't have so many different modalities (no turbo charger and stuff...)
In my opinion you should buy the cheaper tuning