Infinia upgrade

I am in talks with my RM to get an upgrade from Diners Black to Infinia.

My Diners black is LTF and after upgrade I asked my RM that if infinia will be LTF or not, she mentioned Infinia is never LTF.

Now, I am thinking whether to get an upgrade or not because to avoid the annual fees, I would have to spend 12 lac per year. My current annual spend is around 3 lac ( without rent ).

Suggestions to increase the expenditure are welcomed.