I tried the vive in the shops, it was amazing, even with the SDE.
I decided to purchase the vive pro. The SDE is certainly less prominent with this upgrade, giving more immersive looking graphics. But, yes, if you look for the SDE, you'll find it. Though it's certainly not "in your face" and impossible to ignore like with the vive.
Rosieox, it seems a bizarre thing to say, that you don't care about improved graphics?
Also, the vive pro is more than just a graphics resolution upgrade. It has other improvements over the basic model.