I can't complain at all.. Great range of motion.. Feels like normal.. I've had it a little over two years.. I have had it looked at twice because I usually still gave cervical issues but not in regard to the level of the disc.. All X-rays show perfect alignment.. Of course the surgeon deserves the credit he has done numerous replacements. . As for the brand it slips my mind.. I'll,find out for Ya tomorrow .. My wife would remember because she talked to the manufacture many times with questions ..