I'm not sure I'd say there's as much bass as the LCD-3, but it's not off by much. The thing is, it's so much more precise and layered on the 800S, not to mention the incredible detail and near-flawless tone of the mids and highs. While I do agree that the old 800s have a broader/deeper soundstage, it's close enough that you don't miss the slight loss and it's only apparent when doing direct A>B comparisons.
Essentially, Sennheiser has taken what was a very finicky (and oftentimes annoying) headphone, that would light-up every weakness in your system and source material, and turned it into an immensely satisfying, well-rounded beauty, without sacrificing what draws enthusiasts to it in the first place, the uncanny ability to retrieve details like no other. While certain headphones have better individual properties, like the way the SR-009 handles acoustic instruments, or the Sony R10s unmatched female vocals, no other seems to do everything quite as well as the 800S.
I'll need more time with them before crowning them the "all-rounder" king, but so far it's leaning that way.