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If I were to replace every exterior lock on my home, I would choose Medaco. They are supposedly the only locking system that "bump keys" cannot compromise. And..... only a Medaco dealer can make a key.
If safety is a top concern than, hands down, Schlage.
Two good law enforcement friends, one a police officer, the other SWAT, have both said, after years of professional experience and law enforcement classes focusing on breaking and entering, the industry agrees that Schlage locks are the hardest (most time consuming) to break/crack.
Both said ALL locks can be compromised but the time involved to crack a Schalge is much more and research shows (findings from convicted burglars, robbers, etc.) if a perpetrator has a choice between a home with Schalge locks and one with different locks they will choose the other one.
Now, the same officers also said if a perpetrator REALLY wants in, they will simply break the door down but these type of criminals (usually violent) are less common than your run of the mill burglar.
You can spend as much or as little as you like on a lock but when it comes down to keeping door shut when a burglar decides to visit is the door installation. A one inch deadbolt is worthless if the unit is installed wrong. We block entry doors at the hinge and locking areas back 4 feet or to the next corner. We make sure the hinge side of the framing is absolutely plumb so no shims are used and frame the latch side so only a small shim is necessary- yeah, we take our time installing entry doors. But you'll destroy the door before you'll ever just hit it with a crowbar and pop it open. So pick a brand of lock, they're all good for what little they do.
I had this tenant who came from a little town in Indiana to work at P&G and rented the second floor of my two family. Her father brought his own lock which was a huge Schlage and installed it himself. He refused to give me a key. Needing a tenant I said OK. About two weeks later she locked herself out on July 4th weekend and got quoted something north of $200 for a locksmith who would not come until the next day. She asked me to break in somehow.
I took my 1/2 cordless drill upstairs, slipped a 3/8" titanium bit in it and put it to the key hole. I am not exaggerating that it went through the entire lock, spun the cylinder and opened the door in 15 seconds. Faster than a women can find her keys in a purse.
I doubt any of those home security locks are any better.
I have BiLocks and like them. But if I bought new, I would probably go with Abloy. Both have unique keys and can only be duplicated at their dealers. They also offer a wide variety of locks that can all be opened with one key - even padlocks, deadbolts, and cam locks.
Of course, from a security aspect, it is probably much more effective to reinforce your door jambs and hinges before spending a lot of money on locks.
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