DMAT? or RP?
This decision definitely depends on what you want to do in music, fellow musician. You can look at many different aspects and think of what you want to do.
SP's DMAT, by which the three different students from different tiers have replied (though I can't identify you all!), is more or less an introductory course - but if you choose to dig into the wealth of information its lecturers have, their experiences and do some research at the SP BizIT Library, you're going to learn a whole lot more too. This diploma is aimed to show you where exactly in the different fields of music are you most appealed to. For me, my weakest interest was business but my strongest interests were in music technology and music production. Songwriting wasn't for me, arranging wasn't too good but doing music to film was better.
The only downside would be that people would enter based on O Level results and not by talent. I was one of those O level entries and am only the top by luck, really. My piano skills are humble or none, but I could study and learn and pick up what I was interested in.
One more thing - try not to do what I did and take the grades so seriously that you lived for the assignments. I feel like I could've learnt so much more if I took half the time rotting in a mindblock to read in the library. Yeah, some regrets.
Also, RP has Sonic Arts, I believe. It's something different, exploring more of audio than music. But if we're talking Berklee-like education, the only bet you'll find is SP's DMAT.
(If all else fails, SAE.)
-<dd> Mabel