I have Melod.ie and bought tier 2 of Persona to have proper access to rights for clients.

The two are not in competition in my opinion and are a great complement to each other. The music libraries are very different and together they cover 90% of my audio needs, leaving 10% out for sound effects which I'd probably buy on an individual basis as and when.

Persona has amazing tracks. Their library is really one of the best I've seen. The production quality of the tracks is right at the top. I do agree with other reviewers that the search facilities are lacking. BPM filtering is also missing. Although you won't struggle to find excellent music, you may struggle finding the most suitable one for your needs at the time you search.

I think they deserve 5 stars because this is something they can fix - being on AppSumo is about early feedback so I feel this is something they can look into.
I think they may be considering adding sound effects too but you'd have to check with them if that's important to you as I'm not entirely sure if I got that right.

Also another feature I think is missing is the automatic production of a PDF license for each individual download. If Persona goes bust or loses it's data, how easy is it for me to prove I obtained proper licensing for the tracks? Hopefully they fix this.

Highly recommended though!