Which miner do i use?

[Rogue]

Im running double 6990's and this is my first rig and first time setting up a miner...just trying to figure out which miner would give me best results and does the block chain on Bitcoin client need to be sync'd in order to mine?

[drawingthesun]

If your pool mining you don't even need the client on your computer.

Also I use cgminer, it can mine everything and is regarded as the best miner. Fully customizable