I would recommend Citi Prestige which gives you host of other benefits including unlimited 1+5 Priority Pass, oversea medical insurance, meet+greet, airport transfers. These benefits can come in handy if you travel frequently. Also the points convert 1:4 miles with all major airlines including Jet/AirIndia. If you sign up before 31 March, you also get Etihad Gold status which can be useful when flying Jet.

With the recent devaluation of Air India SBI card, I would not really recommend it. For *G, you could get a status match from Etihad Gold to Avianca Amigo and use it to access *G benefits on Air India and other member airlines.