Nobody leaves, nobody gets hurt.
From Andrew's quote below, it sounds like you can't go wrong. I'm a believer in the law of diminishing returns so I would feel very comfortable with the more economical model.
From Andrew
" The reasoning for a die-cast option for the other drivers is more perception than anything else. Some manufacturers use very thin-walled stamped steel woofer baskets that can resonate at some frequencies. However, the standard Axiom baskets are made from very heavy gauge steel and do not "ring". You can expect identical performance from either the standard or die-cast option. "
