I don't have an account but my wife has a premium and I'm constantly fucking her algorithm by previewing records I'm debating buying and there's a pretty good selection of stuff on there.
I could just as easily use bandcamp to trial stuff but I have that google home audio thing and can blast stuff through my stereo, in my kitchen, etc. I've already hit the new Puce Mary a few times, there's a shockingly large selection of Iron Lung Records releases including that Mutant Video LP I like so much and have already bought, however I don't usually spent my time searching for obscurities, I typically go for whatever mood I'm in. Most of the time that's 70's Genesis when I'm too lazy to flip an LP....