The Good: These cranks are light, strong, and can take any abuse you throw at them. I have had these cranks for a year now I haven't run Into and problems. The metal backplate on the crank arms look good and add a lot of strength to the cranks. They have a beefy 22mm spinal with hollow bolts.
The Bad: The paint rubs of the arms easily if you ride a lot. I would suggest getting mid top shoes because these cranks hurt your ankles. Spline drive is only compatible on one side.
I used to ride profile cranks which literally bent then snapped in the middle of the arms so I wanted a set cranks that would last, not bend or snap, so the welded on back plate was appealing to me. One year later and they are still running strong. The crank arm fits snugly into the spinal with no wobble which is also a pro. So overall I would highly recommend these cranks.