Agree with GiselleK, though matchmaking services for busy professionals was a bit worse in my case.
Before committing time to the service, work out whether the active count matches the claimed count.
Two of us compared notes on the platform and landed in the same place on how present the moderators actually are.
Unless you're in a major metro, expect how many profiles logged in this week to be the limiting factor on that one.
Your mileage on matchmaking services for busy professionals will vary by city more than by anything else.