Hey Kayouker- just a few thoughts on my own- I play a lot of stringed instruments and there are some basic principles-
what you said above about the sound difference seems to be the usual case-
anything painted or heavily clearcoated is not as good at letting sound through as something that is not- whether it's a uke, a guitar ,, fiddle etc.
and mahogany seems to be particularly mellow sounding- include "sapelle" and nato I guess- described as similar- i know sapelle is very mellow sounding
I've had a cheap Rogue steel string guitar I've had for years, and even with a laqeuor finish, the sound is nioticibly more mellow than any of the pine topped guitars in the same league.
I break the sound basically into three components
volume
overtones
and sustain
I think volume and sustain are more closely related to body shape and size, and the type of strings
"Overtones" are the variance you can hear within both the volume and sustain
unpainted and unfinished mahogany will, given the same shape size and strings- let more sound through the body and deliver more overtones
I ended up getting that uke above delivered, and here's my review in the review section:
http://forum.ukuleleunderground.com/showthread.php?92355-Really-nice-CHEAP-Kala-ukadekic-tenor
I'm quite happy with the ukadelic tenor- although I'm sure the higher priced unpainted mahjogany models above it probably deliver a better sound, the difference is probably mainly in overtone- I simply couldn't spend the money on one.
because this ukadelic is made with thin poplar and has a volumous deep body- it actiually does quite well with volume and sustain- and those are pumped up with the aquila strings which for some reason aren't on the mahogany bodies- they are probably set up to maximize the overtone and give a sft sound full of texture
It doesn't feel or sound like a cheap uke in anyway- when I first started on ukes last summer- I wanted a "tropical day" Kala just to hang on the wall mostly- but that one is usually the highest priced of their soprano line, so I got somethinmg else more based on sound then later- and I chose an unpainted mahogany Hola that has a really great "bell shape" for a really classic uke sop sound at a cheap price.
here's the review I did of that:
http://forum.ukuleleunderground.com...ay-quot-Hola!-quot-to-a-really-solid-enty-uke
I expected the Kala ujadelic tenor to be of solid quality, and wasn't disappointed! THe price was fantastic, and listed as a "blem" but I can;t find a single thing wrondg with it.