I am not much informed about the Hero bikes.
I have rode one Hercules, Ryder Neo.
As for suggestions, what I understood is front and rear suspensions are just an add-on, not required in daily commuting. Mostly required for train riding. Cheaper ones are not worth it.
Disc brakes are good but maintenance may be high.
So, get yourself a bike which is light, has 18/21 gears and minus suspension and disc. There must be many options from Hero and Atlas. Try them out once, and get the one you are ok with.
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