The Citi e savings account was interesting when you could get 10 or 20K AA bonus miles for opening one along with a free checking account and a linked AA credit card. But, that, so far as I know, is now over and Citi apparently has adopted a policy of chiseling down the e savings rate (which started at 5%--now 4.5%).
On the other hand, Citi does have a pretty good online site and free electronic bill pay.
All in all, Citi is okay as a transaction account, if you need a local checking account. Otherwise, I would look else where (Vanguard or Fidelity?) if putting in large sums. And, wait for another bonus offer from Citi.