From what I've been reading, 25-1's have punchier bass but not as deep as 589 . 25-1 more forward and more treble (somewhat harsh?) compared to 598. On the other hand, 598's are more balanced, warm, and better at handling mids than 25-1? -- are these assessments correct?
I'm debating over the two, being that 25-1ii's are portable and closed while the 598's are open but seem to have better sound placement and perhaps sound quality? Is their sound quality really that far apart? (I've seen a lot of good reviews about the 598's) I'm willing to sacrifice portability for sound quality if that really is the case. As for music, they will be used for acoustic, rock, electronic, jazz, to classical- a wide array.