Same as @Lauren Mitchell, though I would say how the tone shifts late at night is the bit worth testing first with best times.
Tried best times across a couple of evenings and honestly what I ended up with was clearly ahead on this one point.
Am I the only one for whom best times stopped working after roughly six weeks?
The part I keep getting stuck on with best times is how quickly people push to move platforms.
For me the thing that separates the good ones with best times is how much of the traffic is automated.
What matters more than the feature list on best times is what the ratio looks like at different hours.
Worth mentioning have a look at Datewander if best times is what you are weighing up — the free tier actually lets you message.