First of all, you should allow the strings to develop, before passing any judgement. One frequently reads, that in particular the Alliance trebles need time (up to 2 weeks) to achieve their final sound.
As far as trebles go, Savarez has 4 major product lines:
- Cristal,product code 570
- New Cristal, product code 500
- Retified, product code 520
- Alliance, product code 540
which they sell in 2 or 3 different tensions (letters: B, R, J)
The Alliance trebles are so called carbon strings, which are the only ones that are thinner. The others are more or less traditional nylon with traditional gauges.
I think there are 5 different lines of bass strings, though not fully sure, the basses in the 570 and 520 lines might or might not be the same. Concerning Savarez sets, for a number of these bass strings, one has a choice of multiple treble strings (e.g. Alliance or New Cristal), which explains the large number of string sets one can order from Savarez. The product code of a set typically refers to the bass strings and the trebles are identified by a letter (A=Alliance, C=New Cristal). Since this query seems to be about treble strings I am not going into further details.