3 trebles (ebg) are very good in quality and sound well.
3 bases (DAE) are also well, but nothing really special.
So, a "standard classical guitar set" part has no problems, but no happy news for 7th and 8th strings.
7 B and 8 E are not so well - while tuning, their steel wounding gets stretched out and you can see the inner core - I usually get very anxious with that. Also, in their recommended tuning they get out of tune after the 5th fret significantly (tested on few guitars).