what is the best string maker for heavy-metal soloing?
I myself prefer .09 GHS boomers. Depending on the type of metal you're going for, if it's drop tuning, get 13's or something. They get the job done for me and sound great. Last long, too.
i would guess a machine and computer make strings pretty well.
Look at me! I'm wasting space like the other cool kids!
I myself prefer GHS Boomers .10 for metal, I also use Ernie Ball Slinkeys .10, though they're not all that great with Floyd Roses