Opinions!!

I'm using a pair of persona 7f that I grabbed instead of the blades because they were within driving distance. I think if you've been listening to Martin Logans for the last decade you're going to find most conventional speakers dull, that said the personas are the most detailed without being sibilant. detail is this speakers description top to bottom, bass, mids, and treble. even imaging and soundstage is exposed, really impressive and the big ones are on sale here for what looks like 1/2 price used. 

I have all the above speakers on my list also but I think at this point neither is better, only different. 

What kind of things are you looking for and/or would like to improve upon over your MLs, and what aspects of speaker performance and sound reproduction are most important to you?

Most importantly I am looking for a detailed wide soundstage

^^^    Then stick with electro-statics, magnetic-planars or open baffles (ie: Spatial Audio Lab).     Your interconnects can also make or break an accurate recovery of ambience info.      Of course; everything else matters, too.

Most importantly I am looking for a detailed wide soundstage

Number one comment I get, they are always impressed with the detailed wide (and deep) sound stage. The last group who were here, we played Aja, said it was the best he ever heard. Tekton Moab. But hey, don’t just take our word for it, https://youtu.be/7RxRTFx6Cd0?t=350 That's Double Impacts he's talking about. Moabs have that in spades. Ulfberht even that much better. In the price range you are talking? Ulf, totally.

A lot of guys say this is what they want. Then they go buy a Faberge Egg for five times as much. Tekton will never be featured in Architectural Digest. If this is a deal breaker for you, oh well.