I had this recently, and after much thought, went for the LOCT.
Haven’t really used it off road yet, just a few bits in the local woods, but would recommend it. Took her to nursery on it this morning.
Although my only gripe, i would say is depending on your size it may be a bit of a pain. I find that i have to spread my legs out during the pedal stroke to avoid hitting her. Just makes pedaling slightly uncomfortable at the moment. I am sure it is something you would get used to.
I would mock something up on your bike, with child in rough position to see if this will effect you and if its something you could live with.
As for long term durablity, i don’t know but it appears to be well made.
My little one loves it as she can see exactly what is going on and can talk to me easily as well.