ELSS : Fund selection

Hi Everyone,
I am thinking of putting some money in ELSS for saving taxes. I went through some of the funds,historic returns and portfolio on ValueResearchOnline. Axis and Birla sunlife with 5 year CAGR of 19% and 16% look good but most of the stocks in their portfolio are large caps. So I am not sure whether they will be able to repeat the same performance. I am very new to ELSS. I would really appreciate inputs from seniors on how to select MF. Some recommendations will also help the cause.Thanks!

You can use the Mutual Fund selection sheet developed by @pattu sir.

go through once and from the above link, you can find more useful sheets for other selections as well