I am pleased with the sound of my Colibri xgp lightweight version .38mv on my VPI 12.7 arm. Harry @ VPI told me that it is one of the few arms that are a good match with the lightweight. Can't say that I've had tons of carts on my table, but it is head & shoulders above the ZYX Airy 3 and Allnic Puritas carts that I've used in the same rig. IME, vdh provides excellent value and very high end performance.
The comment about sibilance is a system matching issue. This one of the most revealing treble carts and some phono stages & cables are not transparent enough to let the beauty of the vdh treble shine. With a well matched system, solo violin etc. will be hard to beat. The Colibri is also dynamically explosive when the music calls for it, with transient speed that makes drums very lifelike.
On the downside, it's not very forgiving of beatup LPs even if well-cleaned.
The comment about "short cantilever" confuses me, because at least with the lightweight version, their is not much of a body per se, and it looks like a long cantilever to me. I'm always careful because it looks like the cantilever is hanging further down than on some other carts. Cheers,
Spencer