GHS GB 7H-Boomers

I put these on a 27.1" seven string to tune down to F, aka Meshuggah tuning. The strings are just heavy enough to do that decently, although I think I could use just a tad more tension. The quality is good, feels good under my fingers and they've stayed in tune quite well since putting them on.

No complaints really, just really solid strings.

Those strings don't cost much, and works really well.

This set sounds very well, if you need very low tuning.