Checked some Vacuum cleaners
I check out some of the vacuum cleaners you suggested in here, I don't think they are available in India. Here are some of my favorite Vacuum cleaners which are even available in India.
https://priceunder.in/vacuum-cleaner-in-india/
Depends upon allergy
Well th choice completely depends upon alergy, if she has difficulty in breathing then canister vacuum cleaner would be fine. But I think Look for Bagged Vacuum Cleaner it would be best choice for you. I live in India and I am using Eureka Forbes Vacuum Cleaner that's my...