This is the best security available for this price. Reviewers who have said it has damaged their paintwork must have been very careless, as it has a vinyl coating to prevent scratches. The holder and quick release mechanism are simple and work well. As with all new bike locks, it is important to oil it as soon as it arrives, reviewers who have said it locked up after a month would not have had this problem if they had looked after it. You can probably tell I really like these Oxford locks, I live in Bristol and had this lock for 3 years and no one stole my bike, which is quite an achievement in Bristol! I haven't bought a new one to replace a broken one, I lent it to a friend and never saw it again, which is another sign that its a really good lock! Get one.