994F all the way! Incredible machine, it has balls (1457 of them). Prior to that I preferred Komatsu the best for comfort, speed and breakout force. Management was considering the WA1200 as well as a Letourneau 1350, but Cat won out. I ran a new Kawasaki Z115V feeding crusher, it was quick and could dig hard face well, but it was loaded with planetary, ride control and hyraulic problems from day 1, the company had 2 and they were both replaced by 988G's at about 12000hrs.
Bo