Definitely the Rivian.
The Cybertruck’s biggest drawback is that the bed is integrated into the cab. That’s not great when carrying heavy loads. It’s one reason vehicles like the Avalanche were not popular. A detached bed allows cargo to shift while minimizing the impact and ride quality on the cab.
Styling wise, the Cybertruck is just jarring. I hold final judgement until I see it in person but there are several lines that just don’t work well. Having an apex for the top of the roofline doesn’t look great. It would look better if it flattened out a bit. Then there is that nearly vertical line that leads in front of the wheel well. It’s just jarring. The interior looked like garbage to but those were pre-production so we’ll shall see. On the plus side, I think Elon has some good ideas with using stainless steel. Tesla’s batteries are better than anyone elses and I fully believe they’ll have a 500mile version of the truck. Tesla’s battery day also showed that they can reduce the cost per kWh in half. No one is going to be able to compete with them on price when that happens.
Meanwhile, the Rivian is simply a good looking truck in pretty much every dimension. The only thing that is a bit of a turn off are the headlamps but I can get past that. The interior is stunning to look at. But the thing that really gets me is the tank turn capability. That will be extremely useful when off roading, which I do a lot.
I really don’t know if I’ll trade my Raptor for a Rivian, but I’ll certainly consider it. I’ll also consider the electric F-150 when it comes out. Ford knows how to build trucks better than any of the others. Price is my only concern there.