I own the ML1.1s, have not had the chance to hear the ML2 or 2.1 at any length. The ML1.1 is about as good as you can get with push-pull--an extremely natural, non-electronic sounding amplifier. While I could probably be seduced by the 2s, they would not do as well in my system because my speakers are 90db sensitivity and I listen to a lot of Mahler and other power classical music. My understanding from those that know is that unless you have VERY sensitive speakers you will only be scratching the surface of what the ML2s have to offer and you might be better off with the additional power offered by the ML1.1s. You may not get quite that same purity of sound you would get from the single-ended amplifier, but it is very close. If you do have sensitive enough speakers, though, you should go for the ML2 or 2.1, as otherwise you'll probably obsess over it!
The only other amps I would suggest you listen to that are in the same league musically are from Jadis (I'd suggest their single-ended models, or else the JA 30 or JA80), which might be more reasonably priced in France, or else the Audio Aero Prestige monoblocks, 40 watts of single-ended power that sounds drop-dead gorgeous. The predecessor to the Audio Aero monos, from Audio Matiere/Audio Sculpture (can't remember the name, it wasn't the Equilibre), were possibly the best amps I've ever heard, along with the crazy expensive Siltech amps.
The only other amps I would suggest you listen to that are in the same league musically are from Jadis (I'd suggest their single-ended models, or else the JA 30 or JA80), which might be more reasonably priced in France, or else the Audio Aero Prestige monoblocks, 40 watts of single-ended power that sounds drop-dead gorgeous. The predecessor to the Audio Aero monos, from Audio Matiere/Audio Sculpture (can't remember the name, it wasn't the Equilibre), were possibly the best amps I've ever heard, along with the crazy expensive Siltech amps.