I'll need to make new wall cabinets (maple 3/4" ply, about 3' 6"
tall). I'm thinking about hinges.

perhaps:

http://www.cabinetparts.com/c/hinges...eries-200-120/

It seems to me that there are a few things to consider:

What tools are required to mount them?

How accurate do you have to be? I'd like to keep the doors close
together with little space between them. I note some are adjustable.

Something better, cheaper?

Jeff