Since you're already maxed out with Chase.
I would go with these other banks in this order:
Citi AA Visa 50k
Citi AA Amex 50k (with 2 browser tricks)
Barclay US Air 40k (no spending, no fee first year)
Bank of Am. Virgin Atlantic 45k
Bank of Am. Hawaiian 35k
Bank of Hawaii - Hawaiian 35k
Amex Delta 30k
Amex SPG 25k
Wait another 6 months or so, go for some more Chase cards. There are just too many good Chase offers out there.