2 drivers look very similiar

The basket design looks similar. perhaps they are both sourcing their baskets from the same supplier? Or maybe that basket design happens to be a good one and so they both ened up using the same basic shape?

As ttan98 pointed out, there are many differences beyond the appearance.
 
Well, Tymphany/Vifa/Peerless/Scanspeak and SB have common roots and if one dives into the supply chain in the speaker industry, a lot of things get a lot more clear.

The NE180 is a driver to be respected. Just like a few others who are often overlooked (6ND430 anyone?). At the price at PE it really is a bargain. Pity the shipping costs for us over here ruin the equation.
 
I have a pair of NE149's. They are pulling duty as the midranges in my 3 way active OB's.
They are wonderful. I looked at the Satoris, that price tag though.
I have had the opportunity to enjoy several SB and Satori drivers and I am a huge fan. However, I couldn't justify the price difference between the two. The ROI just didn't seem to be there for me.
If everything else you have is super-duper top shelf gear... then sure, why not? Otherwise, I have also used many Peerless drivers and have always been at least satisfied. In most instances they have exceeded my expectations.