GHS strings are my favourite since a long time!
This set is amazing on electric 12 string guitars.
I use it on my B.C.Rich double neck Bich, a vintage USA handmade one, and it sounds amazing!
What I like more of the GHS Boomers is that they don't loose their brightness so hard as many other brands: they don't last much longer than others, but they sure sound better for longer!