Give them a listen
I was interested in the sound of the new tweeters so went to have a listen. They've been trying with the ATF technology but so far I didn't think they'd gotten it right. Well, these were not my cup of tea for sure. Try the bookshelves though, they were better to my ears than the 10s or 12s.
If you want the ML sound I remember seeing sources on sale for < $800 earlier in the year, although they may have been remanufactured. I think that's the entry point for the ML sound.