Unless you won't get bored with your furniture in a dacade or two, I suggest go with the middle range plywood. You will understand what is middle range if you visit a handful of plywood sites. Don't pay more than 70 for playwood which you can use in all the places except kitchen.

I don't think going for high brand image plywood and wasting money is not suggestable. If it is box type, it is better to settle for middle range plywood(60-70) as the plywood sheets will become enough sturdy when laminated. Laminates too... cedar and signature are equally good though they cost a ...