Itunes encodes with aac which, from my understanding, is at least as good as a standard 320. People generally pick beatport because of selection of underground tunes and the interface layout with searching by sub genres. Not sure If you can search that way in itunes, but If you can find a track for cheaper, go for it.
What kind of stuff you’re after? if you’re after underground/electronic stuff definitely check Bleep/Boomkat/Digital-Tunes/Surus/Juno, much better alternatives to BP and iTunes
The search function in iTunes sucks. You really need to know what you’re looking for. Beatport also allows you to search things you weren’t specifically looking for. You can spend literally days on beatport digging for tunes.
The biggest thing that keeps me coming back to beatport is the interface. It’s just so much easier to find what I’m looking for, both because of their search filters and because of the mybeatport section. While you certainly shouldn’t limit yourself to just beatport if you want a good selection of tunes, there are plenty of advantages that make it my first stop every monday.
I can hear the difference. I swear everytime I download from them it sounds distorted and im not about to blast that over a good sound system. I mean if your playing at parties or a whole in the wall bar who cares, but anywhere respectable dont be using such bad quality. And they need to start offering better quality downloads imo
For what its worth, I have also seen it claimed that 256 AAC is equivalent to 320 mp3. I think it was in an article on Digital DJ tips about file formats. I have no idea if that’s true, as I have never purchased anything from itunes.