Greg is correct, I started out with a normal CitiGold account and have now been getting calls, offers and brochures from the Private Banking people. As far as I know, they now want you to have a min. $100K in investments (excluding loans, etc.) and will waive all your DC fees and all other credit card fees for Citi issue cards. I have 2 DC products and 1 Visa and 1 MC product from Citi, and all fees are comped.
Overall, I think the Citi product and service is adequate, although certainly not stellar.
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Gaucho100K