Which material sounds better for speakers construction? Wood, Ply or MDF?

I really enjoy my solid wood (Sapele) speakers.  Most speaker companies will not build their speakers out of solid wood because the expense would be to high.  There is a correct way to build speakers out of wood which is very time consuming. I know there is more cost to a speaker then the cabinet.  But I couldn't spend 10's of thousands of dollars on a MDF cabinet with bondo filling the gaps. As for sound goes. Everybody has a personal preference no matter what it's made out of. Find the best speaker that plays the most genres of music really well. 

Most speaker companies will not build their speakers out of solid wood because the expense would be to high

poppycock. There are speakers that cost 500k. There are people that buy them. 

Logic. Never was your strong suit.

@invictus... you clearly don't I am a professional musician  Not a single solitary vintage marshall or fender cabinet is made of plywood, MDF, or particleboard. They are almost exclusively made of Birch.  So you can flap your gums all you want but the actual fucking MUSIC is made with solid wood instruments, solid wood cabinets etc... END OF STORY

Helomech, you make a lot of good points, well done.  

Its funny everyone gets caught up in cabinet shape, wood or not, shape etc, when the room you put the speakers in makes far more tonal difference than the cabinet.  AS you move up the quality and lower the noise floor some of these tiny differences like metal vs wood and other small details start adding up so they do matter.  But for most, at home or the studio, the room is the issue that divides great sound from just okay sound.  
Brad