I'm a fan of the Drop-C tuning... even though I like Drop-Db better... but whatever.. umm. I would get some heavier strings if I were you... I like GHS boomers... they are perfect for tuning down becuase they offer some pretty heavy gauges (I got 12-52's on my guitar) and they are good for metal, which I guess is what you are playing because Drop-C is definately best for that...