Jan,
They do have holes in em so not as heavy as a regular limestone rock. You will not want to snuggle one of these rocks like you do a concrete sack........a bit rough on ye ole edges the rocks are.
I can slap Scott's hand just as easy as you can iffin he goes to pick up one.............
I don't know about the nicest kichi..............just returning what you shared with me.......(remember OKC)