Why are you so concerned about locks and how easily they're broken or cut? Do you live or leave your bike unattended in a high crime area? Will your bike be out of view for a long time (more than 30 minutes)? Can you lock it in a safer location?
For most situations a good U-lock will suffice.
__________________
The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.