Kona is a more coarse weave that will fray when piecing or handling. I've used it quite a lot, but not any more. I sent for a cream Bella sample and love it. Before washing it has a high gloss and wonderful hand and tight weave. After washing it retains the sheen and the feel is almost silk-like. I intend it to be my next go-to solid.
Oh, used to own a quilt shop and worked in one also. I washed samples of the entire Kona color line. Some colors shrunk is width (2 inches) as well as length. There was no rhyme or reason because the washing was the same for all samples.
So beware and buy at least a yard more if you need over 3 yards (that's about 3.5 meter for you). Better to be safe than sorry, as the dye lots do not match from bolt to bolt.
SandyQuilter