Favorite guitar tuning?

I've used 09, 10, and 11, but my guitar always ends up sounding way too muddy when i try to go too low. C tuning has never been possible. But then again, it is a horrible guitar that buzzes a lot even at E standard.

Hopefully getting this Ibanez repaired will fix all my tuning problems. Though I'd still like a 7-string so I can learn Dream Theater and Nevermore properly. They just sound shitty an octave higher.
 
A D G C E A

SICK GRIND...dont ya think :p

well actually i rarely put it that low...sometimes when i wanna play song from THE BERZERKER :D but still my standard tuning is EADgbe
 
Standard tuning...and the occasional drop D and down a whole step

I also use "Lute" tuning (EADF#BE) sometimes for more classical-y stuff