Okay I found both of your suggested cards, and over here they cost (both) around the 140 euro's.
I am going to look if there are cheaper cards over here, and if I found some card, I will state that in this topic, to check if they are compatible with unRAID.
Many thanks,
Rik
EDIT2: I just found this one: HighPoint RocketRAID 2680SGL .
Does this card work with unRAID??
EDIT: Nope, nothing here that is cheaper. Then I'll go for the first card AOC-SAS2LP-MV8.
Thanks for the support!