Please recommend an Irish whistle to those who know what they are doing.

feadog sound is very loud and clear, especially save gas, but especially easy to break the sound, spit a tiny bit will break the sound, although simple to get started, but to play well have to spend a lot of hard work.

Clark traditional whistle wooden block mouthpiece, the sound is particularly small, and air, but very smooth, not easy to break the sound.

The Oriole is a good one, with a clean sound and moderate volume, but it's more expensive than the above two.

I'm not sure about the others, and they seem to be the only three in the mainstream.

The higher end,

Chief series, I have a alto F, the first day I got it just felt like it was a lot of work to blow, the tone is more vicissitude, kind of like a short blowjob.

Colin song flute Particularly awesome, ethereal and smooth sound.

I'm not sure about the other brands, so check out the top post at the whistle bar.