48" Kryptonite Keeper 712, for general riding, going to the store, etc. Also carry a longer 3/8" cable and strong lock. My bike has panniers so carrying those isn't a problem.
For front porch or in the garage when away, I use the heaviest Kryptonite chain and the biggest Kryptonite U lock, often two of those chains and two or three big tough locks. Same for the motorcycle.
The garage door tracks are locked with large, tough locks, located too high to get bolt cutters on them.
A neighborhood druggie/bike thief tried to get one of my ebikes off the front porch at least twice, he couldn't do it.