has anyone had any experience with Viz splined sprockets? are they good? or do they wear out fast like cheap cassette sprockets, im worried about 7075 alu on the viz sprocket, most of the sprockets are made from cro-mo so im afrait that viz sprocket wont last for a long time (3+ chains/6+ months) i would buy a surly or BT sprocket but if VIZ is good then ill buy it because i can get them much faster