For my shop that I hope to start later this fall I am in the dilemma of 10 or 12' walls.

To me it seems I would be wasting a lot of space with 12' walls but then again 12' walls allow you to stor almost all lumber vertically (which I like the idea of) also 12' give a "roomier appearnce" if that is worth anything

What would you do?

Pros and cons would help me out?