I am a Magnepan guy but I think that Mac tube gear would be a good match for the ML's. My local Best Buy Magnolia store has their Martin Logans hooked up to Mac tube gear. I even got to hear a pair of ML CLX's connected to a pair of Mac 601 monoblocks and their top of the line tube preamp at the Magnolia store. I have heard some Dyn's but not that model. I love the sound of the Dyns that I heard, great bass and a slightly warmer sound which I prefer. I can't help with the other's that you mentioned.

You have a lot of options in your price range. I am a big fan of PSB Synchony's, and Thiels which might pair well the Mac gear.

Another brand to take a look at are is Revel. Mr P., a forum member has a pair and loves them.

Of course I can't end without mentioning the Magnepan 3.7i's. I got to hear a pair with a Mac tube preamp and their 452 amp. That combo sounded great. Maggies really sing with tube gear. I much prefer their sound to ML's. ML's are light and airy, Maggies have a better midrange with more depth.