Hannabach Goldin 725 MHT Classical Guitar Strings, Full Set
[725MHT]

I've tried these on two different guitars and they are currently my favourite treble string (to me, most basses are basically the same - these are quite good). I prefer these to Savarez Alliance, whose carbon strings are highly acclaimed where I'm from.
They are very bright, yet still sweet and 'warm'. Other carbon trebles are bright but a bit 'tubby' or dead in the softer/warmer registers.

Oh, and the trebles last a very long time compared to most others so the price is worth it.