I use changeip because it’s the only one that doesn’t have a 30-day like annoyance thing that my router supports.
However, I wouldn’t recommend it as I faced a refresh issue twice in 6 months which forced me to temporarily switch to no-ip (also configured on my router).
Besides no-ip never got my ip resolution wrong (but does annoy me every 30 days).
Just for the sake of completion, I guess…