Yes, you'll want clear batter heads for the style of music you're doing. The clear heads will give you that brighter, more pronounced attack which is what's needed for heavier music to cut through and not get lost in the mix.
It's not that coated heads sound bad, but they don't have as much bright attack than clear heads have. Now, if you mic the kit correctly, use quality audio gear, and know how to EQ, you can get some of that attack back in the mix. But it takes good mics, the proper use of them, and expertise on a mixer to know how to get more attack out of coated heads. It's just far easier and quicker to use clear heads, which naturally have that attack inherent to their sound.
Short answer: Get the clear heads, you'll get to the sound you find you'll need a lot easier!
It's not that coated heads sound bad, but they don't have as much bright attack than clear heads have. Now, if you mic the kit correctly, use quality audio gear, and know how to EQ, you can get some of that attack back in the mix. But it takes good mics, the proper use of them, and expertise on a mixer to know how to get more attack out of coated heads. It's just far easier and quicker to use clear heads, which naturally have that attack inherent to their sound.
Short answer: Get the clear heads, you'll get to the sound you find you'll need a lot easier!