The DS Lite, despite every other Nintendo portable having better Zeldas.

IMO original Game Boy, I played it so much back then.

I voted "Gameboy Advance" it was really a big step up and didn't have the double screens or 3D I disliked. Golden Sun, lots of third party support some of the best Zelda games and just some of the best games ever like

Final Fantasy VI
Metroid: Zero Mission
Golden Sun
Castlevania: Aria of Sorrow
Advance Wars

Grew up with the original Gameboy, returned with the DSLite.
I did emulate some GBC and GBA games back in my PC days,
but 3DS hasn't interested me apart from some games.

Out of the DS and GB, I'll go with the brick that can withstand anything.
My DSLite hinge broke after three years of use, meanwhile my GB still goes on.

Purely based on hype and Zeld bOTWW I am inclined to say NX, otherwise I tought the ds was pretty great.

The 3DS has been the best so far.

I'd have to go with the Original DS.

Even if the GBA has some of my all times favourites the 3DS is just too good, it has many great titles !

Probably the DS, it has the largest selection of good games around. I've spent so many hours with MKDS, NMSB and Pokemon HGSS!

GBA SP best handheld ever. That selection of games was insane.