SL3's
and my current Sequal II's.
the SL3 was the replacement for the the sequal2.
the SL3 was replaced by the Ascent.
which begat the Ascenti
which begat the Vantage
And when the lord heard the music flowing from the 6' monoliths, she thought it was good, and never even asked what they cost.
and so it was written.
back to seriousness...
I have heard (lengthy listening and not "drive by" style) the Ascent, Ascenti, Vantage, Summits and a few of the cheaper, smaller models. They are all awesome. Nothing touches their mid-range / high end response that I've heard (w/o spending 5 figures). The bass response on the passive models (the vantage has an active sub whoofer built in, new for ML as of a couple years ago w/this new generation) relies heavily on what amp you are driving them with.
I could never get the bass right w/my SL3s. Sold them as a result. The Sequals though...I dont need a sub for them. and its all about a shitload of HQ current from the Statos monoblocks that are feeding them.