I have pretty much the opposite opinion. I dove with a canister light or years and switched over to handheld specifically because they are much easier to live with. Here’s why:
1. My handheld, with an extra battery, cost 1/3 what a typical LM or UWLD costs
What does cost have to do with it once it’s in the water?
2. It’s much easier to fly with.
How do you figure. It’s carry on either way. Canister lights are fun to put through the xray though lol
3. Switching between BM and SM is a non-issue.
4. I carry a backup in my pouch, giving me full redundancy for most of my cave dives (first 120 minutes or so) If I’m doing two dives, I switch the battery out between dives.
5. No cord management means less task loading. This is true even if you’re good at task loading.
All fun and games until you drop your light switching hands on the scooter
Managing the light cord is not a complex skill.