I needed some new strings for a recording gig, in a hurry, and couldn't get my "old standard" in time. Store had the Classical Corum High Tension set, though, which the sales guy said were great.
I tried 'em and am now completely sold. An excellent set of strings...and the G string just rings like a bell. I absolutely love them!
One note: it's true that they do last longer than other sets, but if you're practicing/recording/performing a LOT, they will wear out sooner than you like. Just the nature of the nylon beast, imho. They still sound fine for gigging...but, for a truly crisp sound in the bass strings (especially when you're recording and want the sound to stay somewhat consistent from tune to tune), I buy a couple of extra single E/A/D strings for when the old ones get those fret indentations showing. The G/B/E strings last longer. In fact...to my ear, they sound better when you put the second set of bass strings on.
But they are great strings. The sound is pure...