It makes me laugh to read reviews where people say this lock or that is a POS because of some video showing it being defeated by 48" bolt cutters or a cutting wheel.

My favorite videos are made by the guys who created the TiGr titanium lock. They are pretty honest about their product but it does take longer to cut titanium than steel.

Hacksaw Attack

Bolt Cutter Attack

Angle Grinder Attack

That said, I ended up getting an Abus Bordo 6000 purely for the convenience of storage since it's so compact and attaches to a water bottle mount. Now if TiGr would make something like the Bordo out of titanium (and it didn't cost the earth) I would buy that.