Between these 2 I'd go with the REI simply for the more useful vestible size, the 10 sq ft on the Kelty is pretty much useless.
It's because it has two doors, and so two vestibules.
Tent choice depends a lot of what kind of trips you do, weather, who you go with, and so on. Personally I'd look for sales and try to find something better/lighter than either of those for the same price, but those are both perfectly serviceable. If you want two doors and a little more space for gear or a dog, go with the REI one, if you want a little less weight, go with the Kelty. Personally, just based on specs I'd go with the Kelty out of those two, because I pack light and generally only need room for my boots in the vestibule.
But it's a good idea to actually go to the shop and set them up and get inside them both. One may be easier to set up, designed better, or just more comfortable for some reason. I remember my friend's REI Half Dome had something annoying about the poles that I can't remember now, and would have been a dealbreaker for me personally, but it was fine for her. Vestibule and floor area specs can also be misleading sometimes, because the wall angles and other factors can make them seem larger or smaller than they are just based on a measurement on the floor. So the best thing is to go sit inside it with a couple of sleeping pads and a pack to see how much space you actually have in there. Most gear shops are pretty open to letting you do stuff like that if you go when they're not busy.