<One is nipple breaking, I think I have had 3-4 nipple s break in 2 years of riding.>
Are the nipples easily replaceable? Could you do it yourself or have a shop do it? Or did you have to send the entire wheel back to Topolino to repair?
One reason why I like my hand-built conventional wheels are the fact that IF I somehow break a spoke or nipple, it can be fixed at "Any-Shop-USA."