Do bike thieves use the same tools for cable locks and chains? I was looking at the Kryptonite 785 or Kryptonite 955. I have a Masterlock cable lock from my cheapo bike that I'll still use to secure the front wheel, but if they use the same tools for each maybe that's not enough of a deterrent and I should go for a U-lock.

My bike would be locked for no more than an hour at a time, mostly in Royal Oak/Madison Heights if anyone is familiar with the area.