I used LQ on my brand new 996 back in 2000 and was pretty happy with the result, LQ gives a pretty bright "mirror shine" and on a Zenith Blue (kinda light-dark blue) it was pretty smooth & glossy!
After learning about Zaino from this forum I've switched over to Zaino, unlike the "glossy mirror shine" of LQ, Zaino give the paint a more "rich" shine....(more depth as some guys would call it.) I can't say that Zaino looks better on my car, I guess depents on what kind of look you like, but Zaino was definitely more easy to apply and remove than LQ.
In short, I see nothing wrong with using LQ.... have fun!