Haz,
You have gotten some good advice. The micrometer clicker types are certainly they way to go. I occasionally use a 3/4" drive job at work for up to 450 ft lbs. Also use a needle sweep with a multiplier to get about 1200 ft lbs. That's a bear.
One point about the clicker style that hasn't been mentioned is proper care. The adjustment mechanism uses a spring. If you store it loaded up, eventually the spring will weaken and be out of calibration. It will take a long time (many months, maybe even a few years) to do the damage, but you'll likely have the wrench for a really long time. Simple maintenance to back off the load after each use. We try to do that at work, but then our wrenches go out for calibration annually.
Nick