Cool video of the tongue drum, @larrys ! 
Do they have flat bottoms so they don't roll around, I guess? Do they sound louder/better when played on a hard surface as opposed to in the lap? Are yours made of metal?
I guess bodhrans just naturally go real well with penny whistles. 
I have a few frame drums that I enjoy for fun, but have never been able to get good on them. 😥
I love my various whistles.. some are brass, nickel, polymer...
But I think the four I reach for most often are
Black polymer Susato in C (because strong bright nimble notes with almost no effort. Easiest to get good sound among the 4 C's I've tried)
Black polymer Susato in Bb (clear but very warm tone, a little like recorder)
Jerry Freeman nickel Blackbird in high D (pretty warbly tone. notes are clear & easy to hop between notes without squeaking)
Dixon brass Trad in high D (because I like the chiffy 'hollow metal' tone, reminds me of temple bells or something)
What do you mean by a 'duo'? Brass and polymer? Trad? And are they tunable?
It's all in the details... we want to know! 
Collecting whistles is way cheaper than collecting guitars or violins. !
That's a cool video, and towards the end she demonstrates how to do some really 'edgy' sound effects not associated with Irish music. Thanks!
Chiff and fipple forums is a great resource and a very extensive and helpful forum. Everyone who penny whistles should belong to it, no matter what type of music they like!
http://forums.chiffandfipple.com/
The only word of caution I can think of is that they don't seem to have much patience for fun back and forth banter from beginners. Well then... maybe that's what THIS pennywhistleclub.com social site might be better for! 
I love my polymer black Susato 'Kildare' whistles. Especially the lowest two with the single key so I can easily reach the low holes! 
I also like their more mellow tone than metal whistles.
I'm always surprised at how the tiniest air leak where your finger covers the hole can completely ruin a note and make it sound just horrible!
Mack, that's a super cool photo!! 
I like the tone of that. Must be more fun now to sit down to play, with choices!
I saw this nice video on Youtube showing how to make a really simple but elegant leather whistle case- nice!
-Looks like one needn't be an experienced leatherworker to make this. I do think that leather that is not too thick or hard would be best to use...
How to subscribe/follow a forum thread...
how do I do that? I want to get notified when someone make a new post in a thread I'm interested in. Thanks!
