Having heard almost every Logan except the Statements (custom order - rare), and eliminating non-stand-alone speakers (no subwoofers, center channels), my list would be slightly different. I would also take into account only the ones I have auditioned and the value for the money.
1) Aerius i -- Legendary ML sound at low, low cost. Introduced the world to ML.
2) Ascent i -- Same as above, but stunning sound, good slam and higher cost than Aerius. Bang for the buck.
3) Odyssey/Quest-ReQuest -- Yeah, baby !! Hard to beat the sound at any cost. Headbanger specials.
4) Prodigy -- Zowie !! And the used price makes it a real steal. Awkward though...
5) CLS IIz -- Purest midrange available -- stop your friggin' heart good. Points taken for lack of bass. Cheap for what you get
6) Summit -- The total package and customizable, but at a cost
7) Sequel II -- Tall, unstable, hard to match to room, but great sound and cost. Competes with Ascent for bang/buck.
8) SL3 -- Same great "Sequel sound" but they jacked the price...
Underwhelming styling
9) Vista -- Lovely speaker, shy on bass, priced to sell by the zillions. Lacks the wall-o-sound and slam of some of the above.
10) Vantage -- A better Vista, but you'll pay a lot for that 5% improvement
Now remember that I'm not recommending anyone search the 'Gon for a set of Aerius over the purchase of a set of Vantages. I simply believe that these are the Martin Logans that we'll be talking about in 10 years, and represent a great value.
My choice, today, would be a pimped out set of Summits (crazy good sound), but it looses points today because of its' relatively high cost.
~VDR