Hi Laura, full marks for originality as usual. You can hear that you are having a good time doing your very creative best.
I just heard the last 5th version, and I'd vote for turning the bass down just a little. It will give the higher frequencies more space to shine.
I'd also take a look at how you are processing your cymbals / hi hats. Do you have a flanger on them? What plugins are on them? And, pretty important - are you starting your recordings in 16 bit or 24 bit? 44.1 or 48 or 88.2? What kind of soundcard are you using?
I'd recommend starting in 24 bit / 44.1 but others may think . . . otherwise. When you export your "entire mix" does it go to .wav, or to a .mp3? If mp3, are you exporting it to mp3 128??? that would flange everything up a bit for sure.
Sorry for all the numbers, I'm kind of curious about your setup and process, because something sounds a little overprocessed and your songs are just too good not to optimize.
cheers,
-Tom