No, sorry for my bad english. The Nova Signature and the Signature followed by Lambda normal Bias was in the past the best Lambda models for me, now the SR-L700 outperformes these and also the rest of the Lambda line. The new SR-L700 is for me on the level of a good SR-007 MK2, only the SR-009 and SR Omega, maybe early SR-007 MK1´s are a little bit better but i think some prefer the SR-L700 on Stax amps, the other need strong amps to shine. The price of the SR-L700 is to low, i think Stax dont´t sell in the future enough SR-007 Mk2 and SR-009, they are to expensive compared to the performance of the Advanced Lambda.
The SR-404LE is for me a good looking average Lambda model, Airbow SC1 and SC21 is nice but for me not top Lambda models. I prefer the older Lambda sound up to the Nova series.
Your post is a bit strange since all these headphones are very different IME
Lambda NB : very euphonic, lacks impact somewhere, shortened bass and highs, typical Stax medium with a touch of nasal tone
Lambda Signature : extreme out-of-this-world sound. Very bright but not etched at all. Good mids but not as lovely as NB. Curiously very strong bass slam (strongest of all the Lambda I've owned / tested)
Lambda Nova Signature : flat and neutral. Very neutral. Far more details / plankton than the two above. Slightly more impact, but not as much bass as Lambda Signature
SR-007mk1 : close to the latter, with more meat / details / bass, but needs very strong amp to get some impact / engaging sound
SR-009 : the best one for me. Meat, extension, impact, detail, soundstage, etc...Not disappointing with average amp like SR-007mk1, but do benefit strongly from powerful amping
SR-303 to 407 : very impactful, but grainy / aggressive in the high-mids (those are etched, no doubt), shortened bass, cold somewhere. The more electrodynamic voiced Stax.
I'm a true 009 lover, but when looking at Lambda, I feel there are much more different voicings for different tastes than better / weaker ones. So L700 comparisons can't really be "better than xxx Lambda" IMO.
YMMV / 2 cents.
Ali