I was at walmart the other day and saw an onguard "OG series" U-lock+cable combo for $15 that looked suspiciously like the Onguard Bulldog combo ($30+ on amazon), so I impulse bought it. Is it the same thing or a lower-quality walmart version?

Anyways, my main concern was with the key/lock. A quick forum search revealed many people who'd experienced jammed locks, but many of these were from years ago - has anyone who's purchased an Onguard lock in the past year or so seen their lock jammed or their key broken inside the lock?