Like everything else, it depends on the match with the speakers. That said, I agree with Lance that the LTA is not lean at all. They all sound different though and for me, the Ultralinear didn't move me, while the Z40 Integrated did. I also really liked the Z10i if you only need 12 WPC. I own the Z40 (paired with Volti Rivals if that gives you a sense of my rig).
I think SETs are different animals but I used to have Joule Electra VZN-160s for many years, which I think is the working definition of "Lush Life" and while the LTAs are not as lush as the Joule Electra's there are several things they do better and have that same spooky transparency in the mids that I really have only heard with OTLs.
I think SETs are different animals but I used to have Joule Electra VZN-160s for many years, which I think is the working definition of "Lush Life" and while the LTAs are not as lush as the Joule Electra's there are several things they do better and have that same spooky transparency in the mids that I really have only heard with OTLs.