@ phaedo:
here are my humble suggestions as a PAM addicted and modder that has gone quite a bit along the PAM way.
If you really are in doubt about the white vs black issue, then get a black one. This is the only way to really taste how a PAM feels and looks. If you get a white one you will soon find yourself wondering what if I got a black PAM, and you will spend your money again on another PAM.
Usually, white PAMs are for addicted who already satisfied their PAM thirst and want to try something different.
Else, if you are sure on the white one and your doubts are about ETA vs china only, then get the ETA model. Not because of the movement, but because of the added bits. The thicker crown alone is worth the difference.
And, BTW, welcome to this PAM madness! I see you are already thinking about straps: that is a clear symptom of addiction.