Yeah, for me I'm thinking the larger tank was never really the issue, but the fact I had so few (and still small/young) tank mates where it didn't feel so threatened.
Rodger, did you get a sense of when your Lei stopped getting so easily spooked? I know all fishes and environments where we keep them are different, but trying to get a sense from other owners? My Lei is getting use to me, I'll hand feed and it will swim towards me when I stand next to the tank. It does still however get spooked, especially with rest of my family. I think it's also the fact that my tank is clear on three sides contributes to that as well.