I don't know anything about Rad bikes beyond what I've read. People seam to like the bikes they buy and apparently the company is responsive to their customers. That's a good thing.
I would suggest whatever you choose, know what you're buying. Once you get past the "gee wiz, ebikes are cool" phase, it's a bicycle you'll have to live with for a few years at least. Low level components can make long term ownership a misery to live with. Low level drive trains can be noisy, hard to keep adjusted and wear out faster. Cheap suspension forks are heavy and don't perform. They have a wow factor in appearance at time of sale, but really aren't worth 10 cents a pound. Hydraulic brakes, in my opinion, are a must for ebikes. Better stopping power and self adjusting. Pedals, grips, saddle.....
Top of the range isn't necessary, middle of the range is fine for most riders. Quality is important for reliability, if an ebike is to be a transportation alternative.
This will give you an idea of the kind of information available for component hierarchy.
https://www.evanscycles.com/coffees...s-mountain-bike-groupsets-and-their-hierarchy