Cliche..
I think you overuse the really common chord progressions.
True, I like the melodies, you're great at making them, but one does get tired of this chord progression, and you really gotta spice them up with something more unique.
Well... Seems like you use the same synth all the time, it does sound good, but a bit bland.
You should try and work on making songs sound fuller by synthesising your own instruments, this way you can have a greater control of your sound.
Keep in posting more great songs anyway, I kind of like this.