I'm trying to decide if I keep my 10 speed derailleur or change it to an 11 speed Alfine.

Derailleur: less weight, less $$, fairly reliable. I think it can be fairly easily replaced / upgraded in the future.

Alfine: more weight, more $$, can shift while stopped. Reliability for light use? Maintenance?

I would appreciate feedback from our resident experts.

For background: I use my Brompton for air travel to Europe and hope to do the same with my Helix.