I bought these strings for my Columbus (cheap Gibson Humingbird clone).
When I first put them on my guitar, they did sound very bright and loud for the heavy gauge.
However, that bright "sparkle" you get with new strings didn't last for too long for me.
Some players aren't a fan of that brighter sound on heavier strings, but I do like it so I was a little disappointed that they didn't sound new for very long (maybe a week to 10 days).
They are durable and tough though! Despite some bashing from my fathers heavier bluesy style of playing and the bashing's of en enthusiastic toddler, not one string snapped in the year I had them on for. (Yes, I know, I shouldn't leave strings on for a whole year, that's just lazy. :( .)