I bought this set because of the massive seventh string but since I didn't know this brand before I didn't know what to expect.
My first impression was very good, the packaging is very strong and I had a hard time puncturing and opening the sealed outer plastic that protects the string; good sign.
After installing the strings I was very pleased by the tightness I got even when tuning it to D#, the seventh string can be drop tuned down to G# and still retain clarity, that's how thick this string is.
the sound was quite vivid on the first few days, not different from other brands, but deteriorated as time went by. Still, I used the strings for a full year before replacing them (I know, I'm lazy) which is a good sign since I had no broken string for that long even tho I use the tremolo very often (and crudely).
All in all I'm sure I will get another set like this soon.