When you choose any platform please check if they offer Direct Plans.
If not then be aware that your money will be leaking commissions upto 40% of your TOTAL wealth over the long run. How? AMCs pay brokers between 1% to 1.5% for equity funds. This leak when compounded erodes your wealth.
With ELSS funds by going with direct plans you save upto Rs 7,000 as the 3-year commissions are saved in one shot. This is assuming you invest Rs 1,50,000.
So if reliability means better growth of your hard earned money, then go with a Direct Mutual Fund Platform.