Magnepans or...Martin Logan

Dear All, ....sorry very interested but only newby.

Could I have insights on which to choose - up to USD 2.500 - and the reasons. Used or new. Brand and models.

Live in Santiago, Chile so very high addtional shipping and insurance costs - at least double.  Furthermore no possibility of local testing - no models available -...so I must get it right blindly first time. 

Type of music I listen to: Folk, Jazz, Movies, New Age.

Much appreciate your help.

Thanks and regards !
Robert