I wouldn't get too downhearted - as the guy says, your lock only has to be tougher the one on the next bike. ...I'd add: and/or your bike less desirable. That's why I don't maintain nice paintjobs, as long as the thing isn't actually rusting.
mercalia wrote:I think the trouble with chains is that they usuallly allow enough space for bolt cutters to get to work. especially if the chain dangle near the ground, where the bolt cutter can then use the ground as a base?
Compared to a U lock (or "D" lock?) it's harder to get a chain link to stay put under a grinder, and if it's big enough it's hard to get croppers onto it. The good thing about a solid chain is having to make two cuts to free it, as you can't just bend or prise it open after just one cut. Also, you're restricting the risk of theft to well equipped professional thieves - obviously that's still significant but it's still worth the hassle. "takes forever to get through" and "my hand's getting hot" - that was good to hear in the video, and that was with a mains grinder on a Kryptonite 18mm U lock.
Glad to see the hinged bar type lock in action - was that the 3-second one?
I was almost considering getting one till I saw that!
BTW when locking to a railing I always try to include as many bars or rungs of the railing as possible, so if they go for cutting that instead (and remove the lock from the bike elsewhere later), there's more damage to do before getting your bike away. Nobody gives a [hoot] about your bike but passers-by are more community-spirited about public property being damaged.
It would probably come under the heading of obsessive but I think after the comments on this thread I'd go to using the chain
and the Kryptonite. The guy said "U" stands for useless but the 18mm Kryptonite was the one he was taking a bit of time to get through. And there weren't any demos of 14mm or 16mm chain being cut through in a few seconds, which is mildly encouraging.