Pretty funny.You should avoid aluminum cases at all cost. Steel too. Use of aluminum case ammunition has been linked to erectile dysfunction, ingrown toe nails, gout, hair loss, uneven tire wear, and chronic septic system backups. Real men do not use aluminum case or steel case ammo. Why? Because people who reload, like me, cannot use those cases. Its just as simple as that - try thinking of others for once instead of making it all about you. Never mind aluminum and steel are less expensive to the shooter and probably better for the planet. Never mind ammo made from aluminum and steel weighs less in your range bag. Never mind with steel cases you can quickly police your shooting area with a lawn magnet - thus leaving a cleaner area for the next shooter. Never mind all that. You are not leaving anything good for me to pick up when I arrive - and that is just being plain stingy and frugal - if you can live with yourself being 'that guy' then by all means go with steel and aluminum.