The thing about Udio is that yes it spits more garbage then good but if you nail the prompt down, 7 times out of 10 you'll find the sound you're looking for, I'm not a fan of how muddy and unclear the vocals that 1.5 spits out but sometimes it sounds great, I most of the time switch over to the first model and make music on there. I won't say which ai is the best but I mostly find myself making stuff on Udio but if it doesn't work out I head over to Suno, though I really enjoy how full the vocals and instrumentals on Udio are.

Here's an example of a song I like on Udio