My experience is I have owned the 3.6 for 2 years and heard the 20.1 at dealers and shows...I have not heard the ML products.
I think the 3.6 is one of the most complete speakers you can buy. I did spend a lot of time mod'ing the crossover and the stands (Cardas is a good source). I used them with VTL MB750 and they were great...in many ways I still miss that system.
IMHO nothing in audio is twice as good for twice the price. Frankly, it's possible that nothing in audio is twice as good as the 3.6 at any price. Having said that, the 20.1 are better. They can move more air and have a bigger more lifelike presentation. If you have the money to get 20.1 and great amps VTL, Atma Sphere etc. then go for it....if not, the 3.6 with great amps and some mods are better than the 20.1 with lesser gear. BTW I also agree that having the right size room is a must...hope this helps.
I think the 3.6 is one of the most complete speakers you can buy. I did spend a lot of time mod'ing the crossover and the stands (Cardas is a good source). I used them with VTL MB750 and they were great...in many ways I still miss that system.
IMHO nothing in audio is twice as good for twice the price. Frankly, it's possible that nothing in audio is twice as good as the 3.6 at any price. Having said that, the 20.1 are better. They can move more air and have a bigger more lifelike presentation. If you have the money to get 20.1 and great amps VTL, Atma Sphere etc. then go for it....if not, the 3.6 with great amps and some mods are better than the 20.1 with lesser gear. BTW I also agree that having the right size room is a must...hope this helps.