For me, yes. The HD-25-1 II was just too punchy and fatiguing for me, and "came to life" at a higher volume than I like to listen. I kept both for a couple of weeks to audition.
The DT1350 is less punchy, smoother, less "V" shaped response curve (I think? sounds that way to me, but haven't looked closely at both curves). It comes alive at a lower volume, well within my listening level preference. I like the overall sound, the build quality is outstanding, I'm getting used to the comfort, I love the case they come in. They are really fiddly concerning wearing position. It really affects both comfort and sound quality. Fairly minute changes will really affect both.
For me, well worth the effort and price. I think if your listening focuses more on rock, and/or you listen a bit louder (I listen pretty quietly - see my comments scattered around regarding amps, sensitive iem's and my listening volume preferences - I can't use a headstage Arrow because it doesn't play softly enough...), the HD25 is a great headphone. I'd have kept them if I hadn't tried the DT1350. As a contrast, I sold them to a coworker who loves them, and didn't like my DT1350's much...
