I've used both the Toto Drake and the Gerber Ultraflush in commercial bathrooms.
Either would be a good choice.
When you consider cost, do you also consider how much you pay for repairs, and having a plumber come out and unplug toilets?
Or do you assign someone to unplug toilets where you work?
In the church I go to, the unplugging job went to the ast. Minsister.
He got very annoyed to be going into the womans bathroom and unclogging toilets.
Those were old 5.0 gallon American Standard Cadets.