Jiggers
I have tunable high D and low G Susatos and a non-tunable high C Susato. The fingering I use is as you describe, and I find them easy to play. The whistles are straight, not tapered like the Sweetone - the D is about 1.5cm in diameter. I do find that, in a group, they sometimes don't 'sit' too well with the Sweetones, though I've checked mine against my tuner and they're OK (I keep a couple of Sweetones as well and use them if need be).I'm envious of a friend who's just bought a set of three Susato whistles; one head and three interchangeable lower sections.I got mine from The Music Room, Cleckheaton.www.the-music-room.com