And yeah, if someone is searching for a list which planet yields which node levels, here it is:

 

1: Hutta, Korriban, Ord Mantell, Tython, Dromund Kaas, Coruscant

2: Taris(REP),Balmorra(IMP), Nar Shaddaa

3: Tattoonie, Alderaan

4: Balmorra(REP), Taris(IMP), Quesh, Hoth

5: Belsavis, Voss, Corellia

6: Blackhole, Ilum

7: few on Ilum, Makeb, CZ-198, Oricon

8: Rishi, Yavin IV, Ziost

9: Zakuul, Darvannis (also LVL10 Nodes)

10: Iokath

 

Please note, that Slicing is a little bit different. I didn't created a list yet, but it seems the list for it looks like that:

3: Tattoonie, Alderaan, Balmorra(REP), Taris(IMP)

4: Quest, Hoth, Belsavis

5: Voss, Corellia

Great info thanks.