I've used MEC's version of the REI and I've had several Kelty tents over the years.
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. At that weight, it probably doesn't include a footprint.
If weight is more a priority, then I think I'd look at an MSR Hubba series or something from Sierra Designs.
Regardless, $159 is cheap and these are 2 solidly made (if somewhat unspectacular) tents. hard to go wrong.