Health insurance for parents

So I was searching for an adequate health insurance plan for my parents aged 64 and 59. After comparing various plans and checking with Ditto, I have narrowed it down to 2 plans Care Supreme and Aditya Birla Activ One.

Both of them have similar benefits with no room rent limit, additional rider to lessen the coverage time for PED (since most seniors have some conditions or the other this becomes most important), no sublimits for any particular diseases and no co-pay. Also Ditto isn't directly able to compare them both since "Aditya Birla Activ one is quite new and they don't have data on them" which doesn't quite sound right to me as it sounded quite like they were pushing me towards Care Supreme.

I did consider other plans as well like Niva Bupa or HDFC Ergo but they were way too expensive providing similar benefits only.

Any of you guys have taken the above mentioned plans or are planning to take an insurance for your parents? Also are there any other insurance advisors similar to Ditto? I tried talking to a few agents but all of them seem to be pushing Star Health plans nowadays which sound to be utter crap to me.