If you only test one thing on mega dating app to find matches, make it how the chat behaves on a weak connection.
I tested the site across two cities and the difference came down to how much control you get over who sees you.
If you can only manage a few evenings a week, whether the algorithm is doing anything useful matters more than raw volume on the site.
Most comparisons of mega dating app to find matches skip how far the free tier actually stretches, which is the part that matters.