If protecting your bike is a huge concern for you, and you don't have much trust in the locks, then get a bicycle personal articles policy (also known as a floater) from your homeowners policy, not only will a bike be covered for theft but also accidents, and there is no deductible. You would have to check with your insurance company but mine is State Farm and they cover my bikes for full replacement value not depreciated and not stated value and not appraised value; the cost for two of my bikes that total to $5,000 is $125 for the year.
Theft warranties you see on locks are worthless! in order to get a claim approved you have to jump through a lot of hoops which means you have to read the fine print on the box the lock comes with, and even then they don't tell you some things so you have find out more on their website, all in attempt not to pay a claim, and lock companies rarely pay out a claim for someones bike that was stolen, the most you will get is a new lock! I know Krypt. lock requires that you send them the original receipt, but at the time of loss you have to send them the original receipt? Huh? so you need to make sure that the place you bought it from prints out two original receipts because they won't accept a copy. You also have to register the lock, you have to keep the original packaging, you have to make sure you pay for renewing the coverage, but after 5 years you have to buy a new lock because they won't stand behind after that time period. At the time of loss you have to have a police report, but large cities no longer do reports on stolen bikes, so you're screwed; you also have to have detailed photos of the undisturbed crime scene including what you locked the bike up to, if they disagree with what you locked the bike to you're screwed, pics of the area to make sure it had adequate public viewing and lighting if not you're screwed; you have to send back the broken lock, if the lock is missing you're screwed; if you have homeowners insurance they'll only pay the deductible; lock companies will find any excuse they can find to prevent paying out for a stolen bike.
So it's better just to have a floater attached to your homeowners insurance, it's a lot less hassle, while the insurance company may require a police report they will also accept a call number which they give you either over the phone without going out to see where the crime took place or when they come to you to discuss the theft, because insurance companies know that police reports aren't always going to be done. But all the other hassles the lock companies want done is gone.
Edit: I was going to buy the bike floater from State Farm but they quoted me the wrong price, for two bikes totaling $5,000 in coverage the cost was going to be $315 a year with a $300 deductible, I declined. Instead I went with Velo Insurance who covered the Lynskey for $3,400 with a $300 deductible, and the Masi for $1,500 with a $200 deductible for $126...a huge difference in price over the State Farm policy. I have a lot insurance with State Farm from all my personal stuff to my all my business stuff and thought I would get the bike insurance cheaper than $315 they ended up at. SO IF any of you want coverage for a bike check out Velo Insurance, they are a broker for Markel insurance, but Dave at Velo knew a lot more about what he was talking about then the rep at Markel, and Dave was able to change the deductible from $300 for both to $300 and $200 for the same price as Markel quoted. Dave was big help. Anyway go online and look at the coverages they offer, I didn't take any of the medical, or liability provisions, or the stupid roadside assistance, or the world wide coverage; I have all of medical and liability stuff and insurance companies won't pay twice on that, so I declined all of those items and got just the basic coverage.
