AL-LAD and LSZ definitely feel like siblings to LSD, they are on unmistakably familiar turf. AL-LAD is more distinct from LSD than LSZ is. LSZ is very close to actual LSD, but for some reason, for many people, there is something unsatisfactory about it. For myself, it was not a problem with bodyload. Actually I liked LSZ a lot and want to try it some more, but AL-LAD was the winner in the end for me, as well as in the overall popular opinion. Overall, people seem to find AL-LAD to be very fun, light, giddy, and visual, whereas LSZ tends to be a bit more serious.