You don't say what the boxes are going to be used for. If they're shop boxes, my vote is for plywood. Other than that, use anything that pleases you. And that you can afford. And you're not allergic to.
"It ain't what you're told, it's what you know." - Granny Weatherwax
Fawkahwe tribal police SWAT Team
Some days, the supply of available curse words is insufficient to meet my demands.
.....Call me a craftsman, artisan, or artistic, and I will accept that. Call me an artist and you will likely get a quite rude comment in return. I am not a @#$%ing artist.