There are obviously a bunch of good drivers to be had - we used Sang Putu Dana and were pleased. Fair-good English (also Japanese, which we're in no position to evaluate) and a conservative driver. Gentle good soul, we occasionally set him to babysitting our 8-year-old and a like friend while we were wandering about.
Phone 62-361-976067, fax 62-361-975073.
He hangs out across the road from Cahaya Dewata, which is where we found him, if you happen to be staying there. Standard Kijang vehicle, good condition, aircon, etc.