Low-cost index funds are the talk of the town these days. True, low-cost index funds have been available for a while now, but they were mostly restricted to the large cap segment. In the last one year, the passive, low-cost funds have made their way into small cap, mid cap, thematic and sectoral fund categories. Some of these new schemes have also seen good inflows. The question is: should investors ditch expensive schemes for low-cost index funds?