Magnepans or...Martin Logan

Totally different animals I owned them both the latest elolutiin 11 
with powered dual woofers and bass room correction 
these were very good , the maggi from the 3.6 on up ,the 1.7 
no for the 3.6 has that great ribbon tweeter, with maggi you need a great sub  the new Svs 3000 great match and under $1k 
you needmuch more room also from behind with a maggi 
and room panels are a plus for both behind them.

Dear Amigo´s you are all being very helpful with your kind and full of wisdom comments. Please keep them coming...much appreciated !!

Certainly helpful to get the "big picture" to make a decision. 

Best regards,
Robert

What kind of speakers do you have now?

I would agree with those who suggest the Maggies - they have more weight and substance than the ML’s. The ML’s have great clarity, detail and resolution, but there is more to music than that.

Of the Maggies any of the LRS, .7, or 1.7 are great. the LRS are a real bargain, and get great reviews.

But... If you want something that does acoustic music about as well as it can be done, and which is trouble-free and easy to place in small space, which sound engineers revere - get the Proac Response D2. When driven with the right electronics - there is very little that sounds as good in all respects for Jazz, and acoustic sounds. When driven by the Line Magnetic 518ia, there is very little that can compare. Check out the YouTube videos of this set up - nothing quite compares.

https://www.youtube.com/watch?v=lXgADIsgRrk&t=105s

If you want a "giant killer" amp that can drive the Maggies, or the Proac R D2, that is a real value, you will be wowed by the Class D Audio SDS-470C with enough power to drive the Maggies well, which require a lot of power. At $695, nothing can compare for less than $2500+. 600 watts rms per channel into the 4 ohm Maggies. It has none of the Class D gremlins - but sounds like a tube / SS hybrid with resolution and clarity that can only be found in much more costly high-end amps. And it’s light and runs cool - so, you don’t spend a lot on shipping, and air conditioning, or electricity.

https://classdaudio.com/sds-470c-class-d-audio-power-amplifier.html

If OP lived in the US, I would vote ML. But I'm biased because I've owned MLs for over 25 years. While I like Maggie's, I prefer MLs due to their clarity and resolution, and lack of "Maggie slam". Having said that, MLs are very unforgiving of poor recordings, which may not be as big of a problem given OP's music preferences.

Because I bought my most recent pair of MLs used and paid almost as much for shipping as I did the speakers, I can't recommend shipping them to Chile. On top of that, as others have mentioned, if anything goes wrong he's going to have a lot of trouble getting affordable, reliable service.

As much as I love planar speakers, I would go with easily obtainable quality box speakers, as others have suggested.

Buena suerte!