I'm guessing you have an issue with high frequencies. If that's correct, I think the ML's are a pretty good choice. Personally, I find the main reason I'm drawn to an esl speaker is that they don't have a tweeter. The highs are much more realistic and natural sounding.
Advice using electrostats with tube amp.
I'm currently using a Cary Rocket 88R amp with Serie Reference 3A speakers which I like very much but I have an opportunity to buy back my pair of Martin Logan Theos speakers that I sold about a half year ago. I used Martin Logan speakers for many years having had the Odyssee's in the system for 14 years. Now that I'm using the tube amp, I'm wondering how the pairing would be in consideration of the current demand of these speakers at certain frequencies. I was made aware on these forums of impedance dipping below 1 ohm with the Odyssee's at least. Would the Ethos present as drastic a drop and, if so, can this Cary handle it.