vongWithout a doubt in my opinion. I had the 650S for about 3 days and after realising it wasn't functioning properly, I returned it. Instead of opting for a replacement, I got a refund and went straight for the 750S. No regrets. With the front camera being bumped up to 60FPS from 30FPS and the rear camera being brought up to full 1080p (30FPS) from 720p, it's a great second sent of eyes to have in your car.