IMO you can go with NAVI Nifty 50 index as it is currently offering lowest TER. They may opt to increase this later down the line and you would be notfied but as of now it's the lowest.Thanks.can you suggest a good index fund?
Alternatively you can go with UTI Nifty due to its large AUM.
I suggest adding a Nifty Next 50 (or) Midcap 150 to above N50 to follow a SIP.
Please check online the overlap in MFs you are currently holding and DYORSuggest please