Just wondering if there is something out there that's worth paying for with regards to bike theft deterrent? Now I know that with anything else if a thief wants something it will be taken no matter what, right? So at least I want to make it painfully difficult for them. Disk locks, fat hardened chains with matching locks, alarms, etc. are some of the stuff I've seen and so far I've been lucky without them. So what works best? Any advice?