As one of the many unlimited users who is suddenly receiving annoying ads on mobile (streaming radio), I hate them. I get that you've got to pay the bills and such, and maybe having 3 pricing tiers is overkill, but I find these ads far too frequent and repetive.
+ Radio features 2 or more ads after every 2 songs. That's more than broadcast radio.
+ The ads are advertising a service which is lesser than the one I am paying for. I don't care about the Free service when I'm paying $5/month.
+ The ads advertise the same thing again and again and again.
+ The ads are too loud compared to the music
Lastly, pricing for "no ads" seems elevated. For example, all I use mobile for is radio. At least, used to. The ads are so repulsive and frequent that I find the entire experience frustrating and unsatisfying. I could pay an extra $5/month to remove the ads on mobile, but then I'm just paying $5 for uninterputted radio. There's another app that already does that and is cheaper you.