Recently I flew in both Dornier and Trislander on the same day. The "new" Dornier (G-OAUR) is comfortable but equally as noisy as the Trislander - at take-off and in the cruise. When it comes to landing, the Trislander is actually much quieter and gentler. The Do228 has to apply much more "brake" on landing in ALD.
The sound of A Tri is also very nostalgic. By no means "horrible Trislander"!
If it wasn't for the 3 Trislanders, Aurigny would be in an utter mess. Even this afternoon G-OAUR has gone tech and the GUR-DIN flight has been cancelled after an aborted t/o.