i'm building a 4x12" cab, and im planning on replicating the mesa rectifier. I was just wondering if anyone can explain to me whats so different about a straight or slanted cab? does the slanted produce a more wide spread sound.

Also. any opinions on Eminence legend V12 and GB12? Im planning to wire them "X" pattern. please do not suggest celestions - Too pricey.

It's just for when you have a full stack

Straight goes on the bottom, slanted goes on top.

If you're just having one, you'd be best to go with slanted.
Spreads the sound more. Plus, most half stacks will have the slanted as it's cab.
Do you gig much or is this just for home use?