Agreed, if I could only have one headphone it would probably be the LNS, or the original Lambda.However, I think the joy of the LNS is that it stands really well on it's own. I have other headphones that I place above it in terms of which tier they fall in, but sometimes when I'm listening to them I'm wishing they did something different. The LNS is always satisfying even if it loses in a direct a/b. I often think about selling everything off and just being okay with a desktop setup as simple as the LNS/KGSShv mini.
Either the LNS or the SR-X Mk3 Pro is definitely the best all-rounder in the whole lineup, shame I can't wear the SR-X Mk3/Pro for more than 30 minutes at a time without ear pain.