So far I’ve used the liners and curved mags. They function well and put it in the skin with little trauma. I like the grips but sometimes they don’t lock in clip grips well and get pushed out by the plunger bar. It depends on the tube grips I guess. Overall I like the look and feel of the tips they are comfortable and the needle groupings aren’t too tight which happens a lot with cart needles. Still have yet to try other needle groupings with the carts. My standard use is 3rl,5rl,9rl 9,11,15 curved mags.