I haven't had any experience with them but have Easton Injexion and Victory VAP.They are as skinny as they are,Yumi id is .165 and Injexion and VAP are .166.With that small of a diameter you have to use an outsert or like Injexion uses a Deep Six HIT insert with smaller 6/40 Deep Six points.You can't use a standard 8/32 point without an outsert,they won't fit inside the shaft.They sound like the look cool with the finished look of a lacguer bamboo with the nodes for a skinny carbon.Similar to Axis Traditional over the black Axis..Easton Injexion and VAP have a black finish.I did on my Injexion 400 was to use the VAP insert/outsert so I could use heavier 5/16 points.Those skinny shafts seem to penetrate deeper on my targets.