I tried Lustray Lilac SEVERAL years ago, my recollection of it was that it was more or less Floral forward with a non-descript powdery (not offensive) background , not particularly like the more intense and herbal/anilmalic musky (fecal?) Lilac Vegetal made by Clubman. Stephans Lilac is similarly floral/powdery forward but has an added spicey note (clove? Pink Pepper?) that takes it in a different direction than the Lustray version. But stephans brand stuff is easier to get in smaller bottles so you might try that one. As a splash, I find Lustray and Stephans brands pretty similar in performance and feel. ...they both feel a little more soft or watery to me than Pinaud/Clubman "premium" stuff but are still quite effective and comfortable. I prefer the more alcohol forward feel of Pinaud/Clubman products but appreciate how Lustray and Stephans are so approachable, it's like they take the hard edges of the fragrance profiles AND the feel.
I agree with KJ that Lustray products are pretty "simple" by comparison but that simpleness probably makes them more approachable for the masses. I might give Stephans an edge over Lustray but I don't dislike most lustray stuff.
I have not tried/smelled the Gabel's brand lilac but i understand it is also a more floral/powdery scent but I have heard some say the Gabel's brand is/was comparable to the now extinct Masters Lilac Vegetol, which based on name and description was intended to be more complex and herbal like the OG "veg".