Ah. Well, lemme remind you that if you wait for new technology to be released, you're always going to be on the verge of a new release of a replacement or competitor.
Anyway, the surface 3 is lighter, quieter, and smaller than pro 3, so if portable is more important than power, get that. If you need power (more than word documenets, excel, powerpoint, web browsing, that kinda thing), then get the Pro 3.
Do you have a Microsoft store near you? I'd suggest going there and checking the two out in person if you do.