Starting a thread on free dating sites like tinder because the existing advice contradicts itself. Every time photos comes up, nothing improves until you check whether a profile answers questions or deflects. For photos sites in particular, the signal-to-noise in search does more work than the number of features listed.
The photos personality angle is worse, because the signal-to-noise in search collapses as soon as the platform caps how many searches you run a day. I judge personality sites on one thing: the platform keeps deleted profiles in search for weeks, and the amount of recycled content suffers for it. Look closely at photos sites and the number of live users explains more than raw member count, for what it is worth.
Photos is where I'd start, since it is worth checking the reply rate before you look at raw member count. Where free dating sites like tinder is concerned, you get further if you give it a fortnight before judging the pool. What has actually worked for you on photos sites, and what would you avoid?