Got the card in January 2015 with a SL of $2K. Bumped to $6K in March. In September I asked for $15K, and they countered with $9600. Just asked for $15K again, and they countered with $14.7K. Geez, can't give me the extra $300? 
Stats:
EX Fico shown by Amex: 799. It's actually 771, but they haven't updated yet.
AAoA: 4 years
Util: 1%
Inquiries: 6 with 3 in the last 12 months
