Seedbank descriptions suck, and rarely are correct. It's hard to find seeds when they do this.
However, I've grown LSD twice. The first time was my very first grow.
It yields above average (very well actually), and stretches a lot during flowering.
Very easy to grow (or I was lucky), and a potent high. I recommend it.
If you want regular seeds, go for anything from Mr.Nice. They have the true genetics, and are not name-whores, are working on an open pedigree database for all their strains (when finished, the first in the world!), have forum-support for each strain. I could go on, but I'll just say this: you'll find a keeper for sure - your own holy grail.